var http = false;

if(navigator.appName == "Microsoft Internet Explorer") {
  http = new ActiveXObject("Microsoft.XMLHTTP");
} else {
  http = new XMLHttpRequest();
} 

function doRequest(strReplaceMe, strProductName) {
	if (document.getElementById) {		
	  http.open("GET", "AJAXResponse.aspx?product="+strProductName, true);
	  http.onreadystatechange=function() {
		if(http.readyState == 4) {
		  document.getElementById(strReplaceMe).innerHTML = http.responseText;
		}
	  }
  }
  http.send(null);
  return false;
}