// XHTTP Crossbrowser
if( typeof XMLHttpRequest == "undefined" ) XMLHttpRequest = function()
{
  try{ return new ActiveXObject("Msxml2.XMLHTTP.6.0") }catch(e){}
  try{ return new ActiveXObject("Msxml2.XMLHTTP.3.0") }catch(e){}
  try{ return new ActiveXObject("Msxml2.XMLHTTP") }catch(e){}
  try{ return new ActiveXObject("Microsoft.XMLHTTP") }catch(e){}
  throw new Error("This browser does not support XMLHttpRequest or XMLHTTP.")
}