You can try enabling all controls using Jquery on single button click.Just give same class name to each control which you want to enable at a time on single click.
<html>
<head>
<script src="jquery.js"></script>
<script type="text/javascript">
var submit_Click=function(){
$(".class1").attr("disabled", false);
}
</script>
</head>
<body>
<form>
<input type="text" value="tdfgfhfhgfhgf" id="txt1" class="class1" disabled="true" >
<input type="textarea" value="tdfgfhfhgfhgf" id="txt2" class="class1" disabled="true">
<input type="text" value="tdfgfhfhgfhgf" id="txt3" class="class1" disabled="true">
<input type="text" value="tdfgfhfhgfhgf" id="txt4" class="class1"" disabled="true">
<input type="button" value="Submit" onClick="submit_Click();">
</form>
</body>
</html>
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