diff --git a/src/assemblyItemsBrowser.js b/src/assemblyItemsBrowser.js
index 8674c1ba4c..3b4d920aee 100644
--- a/src/assemblyItemsBrowser.js
+++ b/src/assemblyItemsBrowser.js
@@ -1,5 +1,6 @@
 var React = require('react');
-var BasicPanel = require('./basicPanel');
+var BasicPanel = require('./basicPanel')
+var codeUtils = require('./codeUtils')
 var style = require('./basicStyles')
 
 module.exports = React.createClass({
@@ -7,18 +8,20 @@ module.exports = React.createClass({
 	getInitialState: function()
 	{
 		return {
-			currentSelected: 0,
+			currentSelected: 0, // current selected item in the vmTrace
+			selectedInst: 0, // current selected item in the contract assembly code
 			currentAddress: null,
 			currentStack: null,
 			currentLevels: null,
 			currentStorage: null,
 			currentMemory: null,
 			currentCallData: null,
-			selectedInst: 0,
 			lastLevels: null,
 			lastStorage: null,
 			lastMemory: null,
-			lastCallData: null
+			lastCallData: null,
+			codes: {},
+			codesMap: {}
 		};
 	},
 
@@ -33,6 +36,7 @@ module.exports = React.createClass({
 	{		
 		return (
 			<div style={this.props.vmTrace === null ? style.hidden : style.display} >
+			<div style={style.container}><span style={style.address}>{this.state.currentAddress}</span></div> 
 			<div style={style.container}>
 			<button onClick={this.stepIntoBack} disabled={ this.checkButtonState(-1) } >stepIntoBack</button>
 			<button onClick={this.stepOverBack} disabled={ this.checkButtonState(-1) } >stepOverBack</button>
@@ -40,7 +44,7 @@ module.exports = React.createClass({
 			<button onClick={this.stepIntoForward} disabled={ this.checkButtonState(1) } >stepIntoForward</button>
 			</div>
 			<div style={style.container}>
-			<select size="10" ref='itemsList' value={this.state.selectedInst}>
+			<select size="10" ref='itemsList' style={style.container} value={this.state.selectedInst}>
 			{ this.renderAssemblyItems() }
 			</select>
 			</div>
@@ -48,13 +52,38 @@ module.exports = React.createClass({
 			<BasicPanel name="Stack" data={this.state.currentStack} />
 			<BasicPanel name="CallStack" data={this.state.currentCallStack} />
 			<BasicPanel name="Storage" data={this.state.currentStorage} />
-			<BasicPanel name="Memory" data={this.state.currentMemory} />
+			<BasicPanel name="Memory" data={this.state.currentMemory} renderRow={this.renderMemoryRow} />
 			<BasicPanel name="CallData" data={this.state.currentCallData} />
 			</div>
 			</div>
 			);
 	},
 
+	renderMemoryRow: function(data)
+	{
+		var ret = []
+		if (data)
+		{
+			for (var key in data)
+			{
+				var memSlot = data[key]
+				ret.push(<tr key={key} ><td>{memSlot.address}</td><td>{memSlot.content.raw}</td><td>{memSlot.content.ascii}</td></tr>)
+			}
+		}
+		return ret
+	},
+
+	resolveAddress: function(address)
+	{
+		if (!this.state.codes[address])
+		{
+			var hexCode = web3.eth.getCode(address)	
+			var code = codeUtils.nameOpCodes(new Buffer(hexCode.substring(2), 'hex'))
+			this.state.codes[address] = code[0]
+			this.state.codesMap[address] = code[1]
+		}
+	},
+
 	checkButtonState: function(incr)
 	{
 		if (!this.props.vmTrace)
@@ -62,71 +91,82 @@ module.exports = React.createClass({
 		if (incr === -1)
 			return this.state.currentSelected === 0 ? "disabled" : ""
 		else if (incr === 1)
-			return this.state.currentSelected >= this.props.vmTrace.vmtrace.length - 1 ? "disabled" : "" 
+			return this.state.currentSelected >= this.props.vmTrace.length - 1 ? "disabled" : "" 
 	},
 
 	renderAssemblyItems: function()
 	{
-		if (this.props.vmTrace && this.props.vmTrace.vmtrace)
+		if (this.props.vmTrace)
 		{      
-			return this.props.vmTrace.vmtrace.map(function(item, i) 
+			return this.state.codes[this.state.currentAddress].map(function(item, i) 
 			{
-				return <option key={i} value={i} >{i} {item.instname}</option>;
+				return <option key={i} value={i} >{item}</option>;
 			});	
 		}
 	},
 
-	componentWillReceiveProps: function (nextProps) {
+	componentWillReceiveProps: function (nextProps) 
+	{
 		this.updateState(nextProps, 0)
 	},
 
 	updateState: function(props, vmTraceIndex)
 	{
-		var previousState = this.state.currentSelected 
-		this.setState({ currentSelected: vmTraceIndex })
-		this.state.currentAddress = props.vmTrace.vmtrace[0].address
-		this.state.selectedInst = props.vmTrace.codesmap[this.state.currentAddress][props.vmTrace.vmtrace[vmTraceIndex].pc]
+		var previousState = this.state.currentSelected
+		var stateChanges = {}
+
+		var currentAddress = this.state.currentAddress
+		if (!currentAddress)
+			currentAddress = props.vmTrace[vmTraceIndex].address
+		if (props.vmTrace[vmTraceIndex].address && props.vmTrace[vmTraceIndex].address !== this.state.currentAddress)
+		{
+			this.resolveAddress(props.vmTrace[vmTraceIndex].address)
+			stateChanges["currentAddress"] = props.vmTrace[vmTraceIndex].address
+		}
 
-		if (props.vmTrace.vmtrace[vmTraceIndex].stack)
+		if (props.vmTrace[vmTraceIndex].stack)
 		{
-			var stack = props.vmTrace.vmtrace[vmTraceIndex].stack
-			stack.reverse()	
-			this.setState({ currentStack: stack })
+			var stack = props.vmTrace[vmTraceIndex].stack
+			stack.reverse()
+			stateChanges["currentStack"] = stack
 		}
 
-		if (props.vmTrace.vmtrace[vmTraceIndex].levels)
+		if (props.vmTrace[vmTraceIndex].levels)
 		{
-			var levels = props.vmTrace.vmtrace[vmTraceIndex].levels
+			var levels = props.vmTrace[vmTraceIndex].levels
 			var callStack = []
 			for (var k in levels)
-				callStack.push(props.vmTrace.vmtrace[levels[k]].address)			
-			this.setState({ currentCallStack: callStack })
+				callStack.push(props.vmTrace[levels[k]].address)	
+			stateChanges["currentCallStack"] = callStack
 			lastCallStack = callStack
 		}
 
 		var storageIndex = vmTraceIndex
 		if (vmTraceIndex < previousState)
-			storageIndex = this.retrieveLastSeenProperty(vmTraceIndex, "storage", props.vmTrace.vmtrace)
-		if (props.vmTrace.vmtrace[storageIndex].storage || storageIndex === 0)
+			storageIndex = this.retrieveLastSeenProperty(vmTraceIndex, "storage", props.vmTrace)
+		if (props.vmTrace[storageIndex].storage || storageIndex === 0)
 		{
-			this.setState({ currentStorage: props.vmTrace.vmtrace[storageIndex].storage })
-			lastStorage = props.vmTrace.vmtrace[storageIndex].storage
+			stateChanges["currentStorage"] = props.vmTrace[storageIndex].storage
+			lastStorage = props.vmTrace[storageIndex].storage
 		}
 
 		var memoryIndex = vmTraceIndex
 		if (vmTraceIndex < previousState)
-			memoryIndex = this.retrieveLastSeenProperty(vmTraceIndex, "memory", props.vmTrace.vmtrace)	
-		if (props.vmTrace.vmtrace[memoryIndex].memory || memoryIndex === 0)
+			memoryIndex = this.retrieveLastSeenProperty(vmTraceIndex, "memory", props.vmTrace)	
+		if (props.vmTrace[memoryIndex].memory || memoryIndex === 0)
 		{
-			this.setState({ currentMemory: this.formatMemory(props.vmTrace.vmtrace[memoryIndex].memory, 16) })
-			lastMemory = this.formatMemory(props.vmTrace.vmtrace[memoryIndex].memory, 16)
+			stateChanges["currentMemory"] = this.formatMemory(props.vmTrace[memoryIndex].memory, 16)
+			lastMemory = this.formatMemory(props.vmTrace[memoryIndex].memory, 16)
 		}
 
-		if (props.vmTrace.vmtrace[vmTraceIndex].calldata)
+		if (props.vmTrace[vmTraceIndex].calldata)
 		{
-			this.setState({ currentCallData: props.vmTrace.vmtrace[vmTraceIndex].calldata })
-			lastCallData = props.vmTrace.vmtrace[vmTraceIndex].calldata
+			stateChanges["currentCallData"] = props.vmTrace[vmTraceIndex].calldata
+			lastCallData = props.vmTrace[vmTraceIndex].calldata
 		}
+		stateChanges["selectedInst"] = this.state.codesMap[currentAddress][props.vmTrace[vmTraceIndex].pc]
+		stateChanges["currentSelected"] = vmTraceIndex
+		this.setState(stateChanges)
 	},
 
 	retrieveLastSeenProperty: function(currentIndex, propertyName, vmTrace)
@@ -185,13 +225,13 @@ module.exports = React.createClass({
 
 	isCallInstruction: function(index)
 	{
-		var state = this.props.vmTrace.vmtrace[index];
-		return state.instname === "CALL" || state.instname === "CREATE";
+		var state = this.props.vmTrace[index];
+		return state.instname === "CALL" || state.instname === "CREATE" || state.instname === "DELEGATECALL"
 	},
 
 	isReturnInstruction: function(index)
 	{
-		var state = this.props.vmTrace.vmtrace[index];
+		var state = this.props.vmTrace[index];
 		return state.instname === "RETURN"
 	},
 
@@ -219,7 +259,7 @@ module.exports = React.createClass({
 	{
 		var i = this.state.currentSelected
 		var depth = 0
-		while (++i < this.props.vmTrace.vmtrace.length) 
+		while (++i < this.props.vmTrace.length) 
 		{
 			if (this.isReturnInstruction(i))
 			{
@@ -241,11 +281,7 @@ module.exports = React.createClass({
 
 	selectState: function(index)
 	{
-		var selectedInst = this.props.vmTrace.codesmap[this.state.currentAddress][this.props.vmTrace.vmtrace[index].pc]
 		this.updateState(this.props, index)
-		this.refs.itemsList.value = selectedInst
-		if (this.props.vmTrace.vmtrace[index].address && this.state.currentAddress !== this.props.vmTrace.vmtrace[index].address)
-			this.state.currentAddress = this.props.vmTrace.vmtrace[index].address
 	},
 
 	formatMemory: function(mem, width)
diff --git a/src/basicPanel.js b/src/basicPanel.js
index 7c4ebc0a1a..1a8fb8f150 100644
--- a/src/basicPanel.js
+++ b/src/basicPanel.js
@@ -7,7 +7,8 @@ module.exports = React.createClass({
 	{
 		return {
 			data: null,
-			name: null
+			name: null,
+			renderRow: null
 		};
 	},
 
@@ -18,7 +19,7 @@ module.exports = React.createClass({
 			<div style={style.panel.title} >{this.props.name}</div>
 			<table style={style.panel.table}>
 			<tbody>
-			{ this.renderItems() }
+			{this.renderItems()}
 			</tbody>
 			</table>
 			</div>
@@ -27,12 +28,16 @@ module.exports = React.createClass({
 	
 	renderItems: function()
 	{
-		var ret = []
-		if (this.props.data)
-		{	
+		if (!this.props.data)
+			return []
+		if (!this.props.renderRow)
+		{
+			var ret = []	
 			for (var key in this.props.data)
-				ret.push(<tr key={key} ><td>{JSON.stringify(this.props.data[key])}</td></tr>)
+				ret.push(<tr key={key} ><td>{this.props.data[key]}</td></tr>)
+			return ret
 		}
-		return ret
+		else
+			return this.props.renderRow(this.props.data) 
 	}	
 })
diff --git a/src/basicStyles.js b/src/basicStyles.js
index a4bae4b52a..ffbc37e1f1 100644
--- a/src/basicStyles.js
+++ b/src/basicStyles.js
@@ -1,16 +1,28 @@
 module.exports = {
+	wrapper:
+	{
+		'fontFamily': "arial,sans-serif"  
+	},
 	container: 
 	{
 		margin: '10px',
 		padding: '5px'
 	},
+	address:
+	{
+		'fontStyle': 'italic'
+	},
+	instructions:
+	{
+		'width': '600px'
+	},
 	panel:
 	{
 		container:
 		{
 			margin: '10px',
 			border: '1px solid',
-			width: '800px'
+			width: '600px'
 		},
 		table:
 		{
@@ -18,7 +30,8 @@ module.exports = {
 		},
 		title:
 		{
-			padding: '5px'
+			padding: '5px',
+			'fontStyle': 'italic'
 		}
 	},
 	hidden:
diff --git a/src/codeUtils.js b/src/codeUtils.js
new file mode 100644
index 0000000000..c531fc4f88
--- /dev/null
+++ b/src/codeUtils.js
@@ -0,0 +1,43 @@
+var opcodes = require('./opcodes')
+
+module.exports = {
+
+	nameOpCodes: function  (raw) 
+	{
+		var pushData = ''
+		var codeMap = {}
+		var code = []
+
+		for (var i = 0; i < raw.length; i++)
+		{
+			var pc = i
+			var curOpCode = opcodes(raw[pc], false).name
+			codeMap[i] = code.length
+		    // no destinations into the middle of PUSH
+		    if (curOpCode.slice(0, 4) === 'PUSH') 
+		    {
+		    	var jumpNum = raw[pc] - 0x5f
+		    	pushData = raw.slice(pc + 1, pc + jumpNum + 1)
+		    	i += jumpNum
+		    }
+		    
+		    code.push(this.pad(pc, this.roundLog(raw.length, 10)) + '  ' + curOpCode + ' ' + pushData.toString('hex'))
+		    pushData = ''
+		}
+		return [ code, codeMap ]
+	},
+
+	pad: function  (num, size) {
+		var s = num + ''
+		while (s.length < size) s = '0' + s
+			return s
+	},
+
+	log: function  (num, base) {
+		return Math.log(num) / Math.log(base)
+	},
+
+	roundLog: function  (num, base) {
+		return Math.ceil(this.log(num, base))
+	}
+}
\ No newline at end of file
diff --git a/src/debugger.js b/src/debugger.js
index 5d67b3c160..01345fddf1 100644
--- a/src/debugger.js
+++ b/src/debugger.js
@@ -11,8 +11,8 @@ module.exports = React.createClass({
 
 	render: function() {
 		return (
-			<div>
-			<h1 style={style.container} >Debugger</h1>
+			<div style={style.wrapper} >
+			<h1 style={style.container} >Eth Debugger</h1>
 			<TxBrowser onNewTxRequested={this.retrieveVmTrace} />
 			<VmTraceBrowser vmTrace={this.state.vmTrace} />
 			</div>
diff --git a/src/opcodes.js b/src/opcodes.js
new file mode 100644
index 0000000000..42355f0793
--- /dev/null
+++ b/src/opcodes.js
@@ -0,0 +1,178 @@
+const codes = {
+  // 0x0 range - arithmetic ops
+  // name, baseCost, off stack, on stack, dynamic
+  0x00: ['STOP', 0, 0, 0, false],
+  0x01: ['ADD', 3, 2, 1, false],
+  0x02: ['MUL', 5, 2, 1, false],
+  0x03: ['SUB', 3, 2, 1, false],
+  0x04: ['DIV', 5, 2, 1, false],
+  0x05: ['SDIV', 5, 2, 1, false],
+  0x06: ['MOD', 5, 2, 1, false],
+  0x07: ['SMOD', 5, 2, 1, false],
+  0x08: ['ADDMOD', 8, 3, 1, false],
+  0x09: ['MULMOD', 8, 3, 1, false],
+  0x0a: ['EXP', 10, 2, 1, false],
+  0x0b: ['SIGNEXTEND', 5, 1, 1, false],
+
+  // 0x10 range - bit ops
+  0x10: ['LT', 3, 2, 1, false],
+  0x11: ['GT', 3, 2, 1, false],
+  0x12: ['SLT', 3, 2, 1, false],
+  0x13: ['SGT', 3, 2, 1, false],
+  0x14: ['EQ', 3, 2, 1, false],
+  0x15: ['ISZERO', 3, 1, 1, false],
+  0x16: ['AND', 3, 2, 1, false],
+  0x17: ['OR', 3, 2, 1, false],
+  0x18: ['XOR', 3, 2, 1, false],
+  0x19: ['NOT', 3, 1, 1, false],
+  0x1a: ['BYTE', 3, 2, 1, false],
+
+  // 0x20 range - crypto
+  0x20: ['SHA3', 30, 2, 1, false],
+
+  // 0x30 range - closure state
+  0x30: ['ADDRESS', 2, 0, 1, true],
+  0x31: ['BALANCE', 20, 1, 1, true],
+  0x32: ['ORIGIN', 2, 0, 1, true],
+  0x33: ['CALLER', 2, 0, 1, true],
+  0x34: ['CALLVALUE', 2, 0, 1, true],
+  0x35: ['CALLDATALOAD', 3, 1, 1, true],
+  0x36: ['CALLDATASIZE', 2, 0, 1, true],
+  0x37: ['CALLDATACOPY', 3, 3, 0, true],
+  0x38: ['CODESIZE', 2, 0, 1, false],
+  0x39: ['CODECOPY', 3, 3, 0, false],
+  0x3a: ['GASPRICE', 2, 0, 1, false],
+  0x3b: ['EXTCODESIZE', 20, 1, 1, true],
+  0x3c: ['EXTCODECOPY', 20, 4, 0, true],
+
+  // '0x40' range - block operations
+  0x40: ['BLOCKHASH', 20, 1, 1, true],
+  0x41: ['COINBASE', 2, 0, 1, true],
+  0x42: ['TIMESTAMP', 2, 0, 1, true],
+  0x43: ['NUMBER', 2, 0, 1, true],
+  0x44: ['DIFFICULTY', 2, 0, 1, true],
+  0x45: ['GASLIMIT', 2, 0, 1, true],
+
+  // 0x50 range - 'storage' and execution
+  0x50: ['POP', 2, 1, 0, false],
+  0x51: ['MLOAD', 3, 1, 1, false],
+  0x52: ['MSTORE', 3, 2, 0, false],
+  0x53: ['MSTORE8', 3, 2, 0, false],
+  0x54: ['SLOAD', 50, 1, 1, true],
+  0x55: ['SSTORE', 0, 2, 0, true],
+  0x56: ['JUMP', 8, 1, 0, false],
+  0x57: ['JUMPI', 10, 2, 0, false],
+  0x58: ['PC', 2, 0, 1, false],
+  0x59: ['MSIZE', 2, 0, 1, false],
+  0x5a: ['GAS', 2, 0, 1, false],
+  0x5b: ['JUMPDEST', 1, 0, 0, false],
+
+  // 0x60, range
+  0x60: ['PUSH', 3, 0, 1, false],
+  0x61: ['PUSH', 3, 0, 1, false],
+  0x62: ['PUSH', 3, 0, 1, false],
+  0x63: ['PUSH', 3, 0, 1, false],
+  0x64: ['PUSH', 3, 0, 1, false],
+  0x65: ['PUSH', 3, 0, 1, false],
+  0x66: ['PUSH', 3, 0, 1, false],
+  0x67: ['PUSH', 3, 0, 1, false],
+  0x68: ['PUSH', 3, 0, 1, false],
+  0x69: ['PUSH', 3, 0, 1, false],
+  0x6a: ['PUSH', 3, 0, 1, false],
+  0x6b: ['PUSH', 3, 0, 1, false],
+  0x6c: ['PUSH', 3, 0, 1, false],
+  0x6d: ['PUSH', 3, 0, 1, false],
+  0x6e: ['PUSH', 3, 0, 1, false],
+  0x6f: ['PUSH', 3, 0, 1, false],
+  0x70: ['PUSH', 3, 0, 1, false],
+  0x71: ['PUSH', 3, 0, 1, false],
+  0x72: ['PUSH', 3, 0, 1, false],
+  0x73: ['PUSH', 3, 0, 1, false],
+  0x74: ['PUSH', 3, 0, 1, false],
+  0x75: ['PUSH', 3, 0, 1, false],
+  0x76: ['PUSH', 3, 0, 1, false],
+  0x77: ['PUSH', 3, 0, 1, false],
+  0x78: ['PUSH', 3, 0, 1, false],
+  0x79: ['PUSH', 3, 0, 1, false],
+  0x7a: ['PUSH', 3, 0, 1, false],
+  0x7b: ['PUSH', 3, 0, 1, false],
+  0x7c: ['PUSH', 3, 0, 1, false],
+  0x7d: ['PUSH', 3, 0, 1, false],
+  0x7e: ['PUSH', 3, 0, 1, false],
+  0x7f: ['PUSH', 3, 0, 1, false],
+
+  0x80: ['DUP', 3, 0, 1, false],
+  0x81: ['DUP', 3, 0, 1, false],
+  0x82: ['DUP', 3, 0, 1, false],
+  0x83: ['DUP', 3, 0, 1, false],
+  0x84: ['DUP', 3, 0, 1, false],
+  0x85: ['DUP', 3, 0, 1, false],
+  0x86: ['DUP', 3, 0, 1, false],
+  0x87: ['DUP', 3, 0, 1, false],
+  0x88: ['DUP', 3, 0, 1, false],
+  0x89: ['DUP', 3, 0, 1, false],
+  0x8a: ['DUP', 3, 0, 1, false],
+  0x8b: ['DUP', 3, 0, 1, false],
+  0x8c: ['DUP', 3, 0, 1, false],
+  0x8d: ['DUP', 3, 0, 1, false],
+  0x8e: ['DUP', 3, 0, 1, false],
+  0x8f: ['DUP', 3, 0, 1, false],
+
+  0x90: ['SWAP', 3, 0, 0, false],
+  0x91: ['SWAP', 3, 0, 0, false],
+  0x92: ['SWAP', 3, 0, 0, false],
+  0x93: ['SWAP', 3, 0, 0, false],
+  0x94: ['SWAP', 3, 0, 0, false],
+  0x95: ['SWAP', 3, 0, 0, false],
+  0x96: ['SWAP', 3, 0, 0, false],
+  0x97: ['SWAP', 3, 0, 0, false],
+  0x98: ['SWAP', 3, 0, 0, false],
+  0x99: ['SWAP', 3, 0, 0, false],
+  0x9a: ['SWAP', 3, 0, 0, false],
+  0x9b: ['SWAP', 3, 0, 0, false],
+  0x9c: ['SWAP', 3, 0, 0, false],
+  0x9d: ['SWAP', 3, 0, 0, false],
+  0x9e: ['SWAP', 3, 0, 0, false],
+  0x9f: ['SWAP', 3, 0, 0, false],
+
+  0xa0: ['LOG', 375, 2, 0, false],
+  0xa1: ['LOG', 375, 3, 0, false],
+  0xa2: ['LOG', 375, 4, 0, false],
+  0xa3: ['LOG', 375, 5, 0, false],
+  0xa4: ['LOG', 375, 6, 0, false],
+
+  // '0xf0' range - closures
+  0xf0: ['CREATE', 32000, 3, 1, true],
+  0xf1: ['CALL', 40, 7, 1, true],
+  0xf2: ['CALLCODE', 40, 7, 1, true],
+  0xf3: ['RETURN', 0, 2, 0, false],
+  0xf4: ['DELEGATECALL', 40, 6, 1, true],
+
+  // '0x70', range - other
+  0xff: ['SUICIDE', 0, 1, 0, false]
+}
+
+module.exports = function (op, full) {
+  var code = codes[op] ? codes[op] : ['INVALID', 0]
+  var opcode = code[0]
+
+  if (full) {
+    if (opcode === 'LOG') {
+      opcode += op - 0xa0
+    }
+
+    if (opcode === 'PUSH') {
+      opcode += op - 0x5f
+    }
+
+    if (opcode === 'DUP') {
+      opcode += op - 0x7f
+    }
+
+    if (opcode === 'SWAP') {
+      opcode += op - 0x8f
+    }
+  }
+
+  return {name: opcode, fee: code[1], in: code[2], out: code[3], dynamic: code[4], async: code[5]}
+}
\ No newline at end of file
diff --git a/src/txBrowser.js b/src/txBrowser.js
index 66772bbafb..113a35db9d 100644
--- a/src/txBrowser.js
+++ b/src/txBrowser.js
@@ -26,7 +26,6 @@ module.exports = React.createClass({
 	render: function() {		
 		return (
 			<div style={style.container} >
-			<div><h3>Transaction details</h3></div>
 			<input onChange={this.updateBlockN} type="text" placeholder= {"Block number e.g. : " + this.state.blockNumber}></input>
 			<input onChange={this.updateTxN} type="text" placeholder={"Transaction Number e.g. : " + this.state.txNumber}></input>
 			<button onClick={this.submit}>Get</button>
diff --git a/src/vmTraceManager.js b/src/vmTraceManager.js
index 938459b3b3..7cf144884e 100644
--- a/src/vmTraceManager.js
+++ b/src/vmTraceManager.js
@@ -1,5 +1,5 @@
 module.exports = {
-	retrieveVmTrace: function(blockNumber, txNumber) {
+	retrieveVmTrace: function(blockNumber, txNumber) {		
 		return web3.admin.vmTrace(blockNumber, parseInt(txNumber));
 	}
 }