function check_silverlight(){
	if (!window.Silverlight){ window.Silverlight={}; }
	Silverlight.available = false;
	try {
		var sl;
		if (window.navigator.userAgent.indexOf("MSIE") >= 0){
			sl = new ActiveXObject("AgControl.AgControl");
		} else if (navigator.plugins["Silverlight Plug-In"]){
		}
		Silverlight.available = true;
	} catch(e){
	}
}