function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != 'function') {
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldonload();
			func();
		}
	}
}

function addEvent(elm, evType, fn, useCapture) {
	if (elm.addEventListener) {
		elm.addEventListener(evType, fn, useCapture);
		return true;
	} else if (elm.attachEvent) {
		var r = elm.attachEvent('on' + evType, fn);
		return r;
	} else {
		elm['on' + evType] = fn;
	}
}

function passtoiframe() {
	qs = location.search.substr(1,location.search.length);
	if (qs.length){
		myiframeref = document.getElementById('myplatesFrame');
		if (myiframeref.src.indexOf("?")) { 
			myiframeref.src=myiframeref.src+"&"+qs;
		} else {
			myiframeref.src=myiframeref.src+"?"+qs;
		}
	} 
}

addEvent(window,'load',passtoiframe,false);