function getXmlRequest(url)
{
	var xmlhttp;
	if(window.XMLHttpRequest) {
    	try {
			xmlhttp = new XMLHttpRequest();
        } catch(e) {
			xmlhttp = false;
        }
    // branch for IE/Windows ActiveX version
    } else if(window.ActiveXObject) {
       	try {
        	xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
      	} catch(e) {      		
        	try {
          		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        	} catch(e) {
          		xmlhttp = false;
        	}
		}
    }
    return xmlhttp;
}

function sendRequest(url)
{
	var xmlhttp=getXmlRequest(url);	 	
	
	if (xmlhttp)
	{
		xmlhttp.onreadystatechange=function()
		{
			//alert("RESULT\n"+xmlhttp.responseText);
		};			 		 
		xmlhttp.open("GET", url+"&RND="+Math.random(), true);			
		xmlhttp.send();	
	}
	else
		alert("problem");

}