function init_listbox_checkbox(el)
{
	el.runtimeStyle.behavior="none";
	if(window.navigator.userAgent.indexOf("MSIE 7")>=0){rerutn;};/*IE7 should be compatible with CSS2.0*/

	if(el.id=="")
	{
		el.id = "listbox_label" + el.sourceIndex +Math.ceil (Math.random() * 10000 )
	}
	
	el.parentNode.htmlFor = el.id;
	
	el.onpropertychange = function()
	{
		var span = this.parentNode.all.tags("span")[0];
		span.className = this.checked?"checked":"";
		
	}
	el.parentNode.onmouseover = function(){this.className="hover";window.event.returnValue=false;window.event.cancelBubble=true;return false;}
	el.parentNode.onmouseout = function(){this.className="";window.event.returnValue=false;window.event.cancelBubble=true;return false;}
}