function chkQuesForm()
{					
	txt="";
	document.getElementById("lblEmail1").style.display= "none";
	document.getElementById("lblEmail2").style.display= "none";			
	document.getElementById("lblQues").style.display= "none";
	if(document.getElementById("txtEmail1").value == "")
	{
		txt += "Please enter Email\n";
		document.getElementById("lblEmail1").style.display= "";
	}
	else
	{
		document.getElementById("lblEmail1").style.display= "none";
		if(IsValidEMail(document.getElementById("txtEmail1").value)==false)
		{
			txt += "Please enter valid Email\n";
			document.getElementById("lblEmail2").style.display= "";
		}
		else
		{
			document.getElementById("lblEmail2").style.display= "none";
		}
	}
	
	if(document.getElementById("txtQuestion").value == "")
	{
		txt += "Please enter Name\n";
		document.getElementById("lblQues").style.display= "";
	}
	else
	{
		document.getElementById("lblQues").style.display= "none";
	}
	
	if(txt!="")
	{
		return false;
	}
	else
	{			
		return true;
	}
	
}
		
		function IsValidEMail(strValue)
		{
        nNoOfArguments = IsValidEMail.arguments.length;
        //if no parameter is supplied
        if(nNoOfArguments < 1)
        {
               return false;
        }       
        
        var strVal     = new String(strValue);
        var bReturn1 = false;
        var bReturn2 = false;
        var bReturn3 = false;
        var bReturn4 = false;
        var bReturn5 = false;
        var bReturn5 = false;
        
        //if '@' comes after first character then true
        bReturn1       =       (strValue.indexOf("@") > 0);                                           
        
        //if '.' comes after first character then true
        bReturn2       =       (strValue.indexOf(".") > 0);                                           
        
        //if single '@' exist in string then true
        bReturn3       =       (strValue.indexOf("@") == strValue.lastIndexOf("@")); 
        
        //if '.' exist after @ in string then true
        bReturn4       =       (strValue.indexOf(".",strValue.indexOf("@")) > (strValue.indexOf("@")));             
        
        //if '.' does not comes immediatly after @ then true
        bReturn5       =       (strValue.indexOf(".",strValue.indexOf("@")) != (strValue.indexOf("@")+1));           
        
        //if '.' does not comes immediatly before @ then true
        bReturn6       =       (strValue.lastIndexOf(".",strValue.indexOf("@")) != (strValue.indexOf("@")-1)); 
        
        //if all values are true return true else false.
        return(bReturn1 && bReturn2 && bReturn3 && bReturn4 && bReturn5 && bReturn6);
	}
	
	function ChangeImage(id)
	{		
		document.getElementById(id).src = "images/button_submit_off.gif";
	}
	
	function RestoreImage(id)
	{
		document.getElementById(id).src = "images/button_submit_on.gif";
	}
	
	
	
function chkFeedbackForm()
	{			
				
		txt="";
		document.getElementById("lblName").style.display= "none";
		document.getElementById("lblEmailEmpty").style.display= "none";			
		document.getElementById("lblEmailValid").style.display= "none";
		
		if(document.getElementById("txtEmail").value == "")
		{
			txt += "Please enter Email\n";
			document.getElementById("lblEmailEmpty").style.display= "";
		}
		else
		{
			document.getElementById("lblEmailEmpty").style.display= "none";
			if(IsValidEMail(document.getElementById("txtEmail").value)==false)
			{
				txt += "Please enter valid Email\n";
				document.getElementById("lblEmailValid").style.display= "";
			}
			else
			{
				document.getElementById("lblEmailValid").style.display= "none";
			}
		}
		
		if(document.getElementById("txtName").value == "")
		{
			txt += "Please enter Name\n";
			document.getElementById("lblName").style.display= "";
		}
		else
		{
			document.getElementById("lblName").style.display= "none";

		}
		
		if(txt!="")
		{
			return false;
		}
		else
		{	 		
			return true;
		}
		
	}
	
function NewWindow(url)
{
    if(url == "Album")
        url = "http://www.facebook.com/album.php?aid=65966&id=16598500449";
    else if(url == 'Image')
        url = "http://www.facebook.com/photo.php?pid=1509095&id=16598500449&ref=mf";            
    else if(url == "Party")
        url = "http://www.facebook.com/album.php?aid=116835&id=16598500449&ref=mf";    
    window.open(url,"Facebook");
    return false;
}