function make_hidden(name,val,fn,obj)
		{
			var q = document.createElement('input');
			q.type = 'hidden';
			q.name = name;
			q.value = val;
			document.forms[fn].appendChild(q);
			var asp = fn; 
			
			var x = Number((screen.width  - 300) / 2);
			var y = Number((screen.height - 300) / 2);

			window.open('seminar_view.php', asp, 'width=300,height=300,top='+y+', left='+x+',menubar=no,toolbar=no,resizable=yes');
			obj.target = asp;
			obj.submit();
		}