// JavaScript Document
// sending url to server using XHR object.

function getBigImg(imgId, classid, img_count)
{
 	
	for(i =0; i < img_count; i++)
	{
		classid1 = "img_"+i;
		if(classid == classid1)
		{
		   document.getElementById(classid1).className='imgclassactive';
		}
		else
		{
		   document.getElementById(classid1).className='imgclass';		
		}
	}
	
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
  {
 	 alert ("Browser does not support HTTP Request");
  	return ;
  } 
var url="getbigimg.php";
url=url+"?imgId="+imgId;

xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true);
xmlHttp.send(url);
} 

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 {  	
	document.getElementById("productbigImg").innerHTML="";
	document.getElementById("productbigImg").innerHTML=xmlHttp.responseText ;
 } 
}

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)
  {
  xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp;
}