try { 
	tmp = jQuery('head');
} 
catch(err) {
	/*
	var scriptObj = document.createElement("script"); 
	scriptObj.src = "/scripts/jquery.js"; 
	scriptObj.type = "text/javascript"; 
	var head=document.getElementsByTagName('head')[0];
	head.insertBefore(scriptObj,head.firstChild);
	*/
	document.write('<script language="javascript" src="/scripts/jquery.js" type="text/javascript"></script>');
}