function open_window(url) {
mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar= 0,scrollbars=1,resizable=1,width=750,height=500');
}


function open_window1(url) {
mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar= 0,scrollbars=1,resizable=1,width=470,height=531');
}

function open_window2(url) {
mywin = window.open(url,"win",'toolbar=0,location=0,directories=0,status=0,menubar= 0,scrollbars=1,resizable=1,width=800,height=420');
}