function show(imgname,fullname)
		{		
		 
		 my=window.open("preview.aspx?name="+imgname+"&fullname="+fullname,"preview","height=460,width=600,left=270,top=85,resizable=no,scrollbars=no")	
		
		if (my == null)
		{
		opener = self;
		opener.focus();		
		}
			
		else			
		my.focus();		
			
		}