function emailvalid(s)
{
	if (s.match(/^\w+([\.-]?\w+)*[\.]?@\w+([\.-]?\w+)*(\.\w{2,4})+$/i))
		return true;
	else
		return false;
}
function isblank(s)
{
	for(var i=0; i < s.length; i++)
	{
		var c=s.charAt(i);

		if((c != " ") && (c != "\n") && (c != "\t"))
			return false;
	}
	return true;
}

//Function to open new pop up window with variable width and height
function openNew(img_nm,w,h,nm)
{

	var myfeatures="directories=no,location=no,menubar=no,status=yes,titlebar=no,toolbar=no,resizable=yes,scrollbars=yes,width="+w+",height="+h+",left=0,top=0";

	if(nm == "")
		nm="new";

	var newImg=open(img_nm,nm,myfeatures);
	newImg.focus();
}

//Function to open new pop up window with fixed size
function openWin(win_nm,nm)
{
	var h=screen.height;
	h=h-80;

	var myfeatures="directories=no,location=no,menubar=no,status=yes,titlebar=no,toolbar=no,resizable=yes,scrollbars=yes,width=680,height="+h+",left=0,top=0";

	if(nm == "")
		nm="new";

	var newImg=window.open(win_nm,nm,myfeatures);
	newImg.focus();
}