var xmlHttp

//FUNCTION TO CHECK THAT EMAIL IS EXISTED OR NOT WHEN USER REGISTRATION OR EDIT DETAIL
function check_user_email(email)
{ 
	if (email.length > 0)
	{ 		
		var url="check_username_email.php?email="+email;				
		xmlHttp=GetXmlHttpObject(stateChanged1);
		xmlHttp.open("GET", url , true);
		xmlHttp.send(null);
	} 
}

function stateChanged1() 
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText > 0 )
		{
				alert("This email is already existed!");
				document.getElementById("email_flag").value=1;				
		}else
		{
			document.getElementById("email_flag").value="";				
		}
	} 
} 
//FUNCTION TO CHECK THAT EMAIL IS EXISTED OR NOT WHEN USER REGISTRATION OR EDIT DETAIL

////FUNCTION TO CHECK THAT EMAIL IS EXISTED OR NOT WHEN USER REQUEST FOR ITS PASSWORD
function check_user_email_tosendpass(email)
{ 
	if (email.length > 0)
	{ 		
		var url="check_username_email.php?email="+email;				
		xmlHttp=GetXmlHttpObject(stateChanged2);
		xmlHttp.open("GET", url , true);
		xmlHttp.send(null);
	} 
}

function stateChanged2() 	
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 
		if(xmlHttp.responseText == 0 )
		{
			alert("This email is not existed in our database11!");			
			document.send_pass_form.email.select();
		}else
		{
			document.send_pass_form.submit();
		}
	} 
} 
////FUNCTION TO CHECK THAT EMAIL IS EXISTED OR NOT WHEN USER REQUEST FOR ITS PASSWORD

function GetXmlHttpObject(handler)
{ 
	var objXmlHttp=null
	
	if (navigator.userAgent.indexOf("Opera")>=0)
	{
		alert("This example doesn't work in Opera") 
		return; 
	}
	if (navigator.userAgent.indexOf("MSIE")>=0)
	{ 
		var strName="Msxml2.XMLHTTP"
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0)
		{
			strName="Microsoft.XMLHTTP"
		} 
		try
		{ 
			objXmlHttp=new ActiveXObject(strName)
			objXmlHttp.onreadystatechange=handler 
			return objXmlHttp
		} 
		catch(e)
		{ 
			alert("Error. Scripting for ActiveX might be disabled") 
			return 
		} 
	} 
	if (navigator.userAgent.indexOf("Mozilla")>=0)
	{
		objXmlHttp=new XMLHttpRequest()
		objXmlHttp.onload=handler
		objXmlHttp.onerror=handler 
		return objXmlHttp
	}
}