import flash.external.ExternalInterface;
var fullurl:String = ExternalInterface.call("window.location.href.toString");


if(fullurl){
	var params:Array = fullurl.split('?');
	fullurl = params[1];
	params = fullurl.split('&');
	var length:uint = params.length;
	var g:uint;
	for (g=0; g< length; g++){
		var index:int=0;
		var kvPair:String = params[g];
		if((index = kvPair.indexOf("=")) > 0){
			var key:String = kvPair.substring(0,index);
			var value:String = kvPair.substring(index+1);
			params[key] = value;
		}
	}
}

www.DegnerWeddings.com

It's not the prettiest piece of code but it works for now

Pull query-string variables from the loading files URL

url

ActionScript 3