function getXmlHttpObject()
{
var xmlHttp=null;
try
  {
  // Firefox, Opera 8.0+, Safari
  xmlHttp=new XMLHttpRequest();
  }
catch (e)
  {
  // Internet Explorer
  try
    {
    xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
    }
  catch (e)
    {
    try
      {
      xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
    catch (e)
      {
      alert("Sorry, your browser does not support AJAX");
      return false;
      }
    }
  }
return xmlHttp;
}




function getImage(cat,imgId)
{
	if (imgId.length==0)
	{ 
		document.getElementById("displayimage").innerHTML="";
		return;
	}
	
	xmlHttp=getXmlHttpObject();
	
	var url="getimage.php";
	url=url+"?cat="+cat+"&view="+imgId;
	xmlHttp.onreadystatechange=displayImage;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
}



function displayImage()
{ 
	if (xmlHttp.readyState==4)
	{ 
	document.getElementById("displayimage").innerHTML=xmlHttp.responseText;
	}
}