diff --git a/index.html b/index.html
index b740408..72ea534 100644
--- a/index.html
+++ b/index.html
@@ -289,15 +289,32 @@
 							</span>
 						</div>
 
-
-						<div class="checkbox">
-							<label><input type="checkbox" id="clearInputsOnLoad" class="checkbox-inline" checked> Clear existing inputs when new inputs are loaded</label>
-						</div>
+						<br>
 
 						<div class="hidden alert alert-danger" id="redeemFromStatus"></div>
 
 						<div class="hidden alert alert-info" id="redeemFromAddress"></div>
 
+						<div>
+							<a href="javascript:;" id="optionsCollapse"><div class="well well-sm"><span class="glyphicon glyphicon-collapse-down" id="glyphcollapse"></span> Advanced Options</div></a>
+
+							<div class="hidden" id="optionsAdvanced">
+
+								<label>Clear Inputs</label>
+								<p class="checkbox">
+									<label><input type="checkbox" id="clearInputsOnLoad" class="checkbox-inline" checked> Clear existing inputs when new inputs are loaded.</label>
+								</p>
+
+								<hr>
+
+								<label>Lock Time</label>
+								<p>The <a href="https://bitcoin.org/en/developer-guide#locktime-and-sequence-number">locktime</a> indicates the earliest time a transaction can be added to the block chain.</p>
+								<input type="text" class="form-control" value="0" id="nLockTime">
+
+								<hr>
+							</div>
+						</div>
+
 						<ul class="nav nav-tabs" id="putTabs">
 							<li class="active"><a href="#txoutputs" data-toggle="tab">Outputs (<span id="totalOutput">0.0000</span>)</a></li>
 							<li><a href="#txinputs" data-toggle="tab">Inputs (<span id="totalInput">0.0000</span>)</a></li>
diff --git a/js/coin.js b/js/coin.js
index 470247b..0747e36 100644
--- a/js/coin.js
+++ b/js/coin.js
@@ -711,7 +711,7 @@
 				});
 			}
 
- 			obj.locktime = readAsInt(4);
+ 			obj.lock_time = readAsInt(4);
 			return obj;
 		}
 
diff --git a/js/coinbin.js b/js/coinbin.js
index 3ac3da9..7f77b92 100644
--- a/js/coinbin.js
+++ b/js/coinbin.js
@@ -349,6 +349,12 @@ $(document).ready(function() {
 
 	$("#transactionBtn").click(function(){
 		var tx = coinjs.transaction();
+
+		if(($("#nLockTime").val()).match(/^[0-9]+$/g)){
+			tx.lock_time = $("#nLockTime").val()*1;
+		}
+
+
 		$.each($("#inputs .row"), function(i,o){
 			if($(".txId",o).val()!="" && $(".txIdN",o).val()!=""){
 				tx.addinput($(".txId",o).val(), $(".txIdN",o).val(), $(".txIdScript",o).val());
@@ -486,6 +492,16 @@ $(document).ready(function() {
 		$("#transactionFee").val((fee>0)?fee:'0.00');
 	}
 
+	$("#optionsCollapse").click(function(){
+		if($("#optionsAdvanced").hasClass('hidden')){
+			$("#glyphcollapse").removeClass('glyphicon-collapse-down').addClass('glyphicon-collapse-up');
+			$("#optionsAdvanced").removeClass("hidden");
+		} else {
+			$("#glyphcollapse").removeClass('glyphicon-collapse-up').addClass('glyphicon-collapse-down');
+			$("#optionsAdvanced").addClass("hidden");
+		}
+	});
+
 	/* broadcast a transaction */
 
 	$("#rawSubmitBtn").click(function(){
@@ -543,6 +559,7 @@ $(document).ready(function() {
 		var tx = coinjs.transaction();
 		try {
 			var decode = tx.deserialize($("#verifyScript").val());
+		//	console.log(decode);
 			$("#verifyTransactionData .transactionVersion").html(decode['version']);
 			$("#verifyTransactionData .transactionSize").html(decode.size()+' <i>bytes</i>');
 			$("#verifyTransactionData .transactionLockTime").html(decode['lock_time']);