function scusstart(){
	var xmlhttp;
	if(typeof XMLHttpRequest!="undefined")
	{
		xmlhttp=new XMLHttpRequest();
	}
	else if(typeof ActiveXObject!="undefined")
	{
		var aVersions=["MSXML2.XmlHttp.5.0","MSXML2.XmlHttp.4.0","MSXML2.XmlHttp.3.0","MSXML2.XmlHttp","Microsoft.XmlHttp"];

		for(var i=0;i<aVersions.length;i++)
		{
			try
			{
				xmlhttp=new ActiveXObject(aVersions[i]);
				break;
			}
			catch(oError){;}
		}
	}
	else
	{
		alert("Your browser doesn't support an XML HTTP Request.");
	}

	xmlhttp.open("POST","check.php",false);
	xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	xmlhttp.send("p1="+escape(1));
	if(xmlhttp.responseText!=3)
	{
//		alert("Сайта не може да работи коректно.\n\nМоля актуализирайте вашият браузер!");
		alert("Problem with AJAX data transfer!\n\nThis site will not work correctly at this browser.\n\nPlease update your browser!");
	}

}