function img_ref(st)
{ 
	var browserName=navigator.appName; 
	var ob = document.getElementById(st);
	if (browserName != "Microsoft Internet Explorer")	{

		var val = document.getElementById('dum');
		val.value += 1;
		ob.innerHTML = '<img src="verify-img.php?' + val.value + '" />';
	}
	else {

		ob.innerHTML = '<img src="verify-img.php" />';
	}
}