function open_window(url) {
        mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar=1,scrollbars=1,resizable=1,width=600,height=300');
        
        }
        
        function open_window2(url) {
        mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=1,width=500,height=260');
        
        }