function xmlhttp(){
	var x;
  	try{
  		x = new ActiveXObject("Microsoft.XMLHTTP");
  	}catch (e){
  		try{
			x = new ActiveXObject("Msxml2.XMLHTTP");
  		}catch (e){
  			try{
	  			x = new XMLHttpRequest();
  			}catch (e){
  				x=false;
  			}
		}
	}
	return x;
}