//implementing ajax to check text image matching
//Wilner A. 08-14-2007
//imageCompare function is executed in the background
//as the user types.

var xmlHttp

function imageCompare(str) {

	if (str.length==0)
	  { 
	  document.forms[0].image_text.value="";
	  return;
	  }
	xmlHttp=GetXmlHttpObject()
	if (xmlHttp==null)
	  {
	  alert ("Your browser does not support AJAX!");
	  return;
	  } 
	var url="captcha_compare.cfm";	//here
	url=url+"?q="+str.toLowerCase();//here
 	url=url+"&sid="+Math.random();	//here
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);

} 

function stateChanged() { 
	if (xmlHttp.readyState==4)
	{ 
    document.getElementById("result").value=xmlHttp.responseText; //here		
	}
}

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;
}