function update() {
	iframe = document.body.getElementsByTagName('IFRAME');

	for (i=0;i<iframe.length;i++) {
		iframe[i].onfocus = save_click;
	}
}

function save_click() {
	xmlhttp=null;
	if (window.XMLHttpRequest) {
		// code for Mozilla, etc.
		xmlhttp=new XMLHttpRequest();
	} else if (window.ActiveXObject) {
		// code for IE
		xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
	}
	  
	if (xmlhttp!=null) {
		xmlhttp.open("GET","/index.php?page=save&ref=" + escape(ref) + "&url=" + escape(document.location),true);
		xmlhttp.send(null);
	}
}