function makeSublist(parent,child,isSubselectOptional,childVal)
	{
		$("body").append("<select style='display:none' id='"+parent+child+"'></select>");
		$('#'+parent+child).html($("#"+child+" option"));

		var parentValue = $('#'+parent).attr('value');
		$('#'+child).html($("#"+parent+child+" .sub_"+parentValue).clone());

		childVal = (typeof childVal == "undefined")? "" : childVal ;
		$("#"+child).val(childVal).attr('selected','selected');

		$('#'+parent).change(function(){
			var parentValue = $('#'+parent).attr('value');
			$('#'+child).html($("#"+parent+child+" .sub_"+parentValue).clone());
			if(isSubselectOptional) $('#'+child).prepend("<option value='none' selected='selected'> -- Select -- </option>");
			$('#'+child).trigger("change");
			$('#'+child).focus();
		});
	}