// JavaScript Document
var xmlHttp
var divName

function showImage(id, target, formNo)
{ 
divName=target;
 //set the hidden form altColor field value
setValue(id, target, formNo) 

xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="get_image.php"
url=url+"?id="+id
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
//alert("url is "+ url +"and id is "+id)
xmlHttp.send(null)
}

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

//Form change logic
function setValue(newValue, prod_id, formNo) { 
    var fieldName 
	var formName
 	fieldName="altColor"+ prod_id; 
	formName="form"+formNo;
    document[formName].elements[fieldName].value = newValue; 
 
}