function createRequestObject(){
	var xmlhttp;
  	try {
   		xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
  	} catch (e) {
    	try {
      		xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
    	} catch (E) {
      		xmlhttp = false;
   		}
  	}
  	if (!xmlhttp && typeof XMLHttpRequest!='undefined') {
		xmlhttp = new XMLHttpRequest();
  	}

  	return xmlhttp;
}