function MakeNewWindow(filename){
var wo
window.name="main";   
wo=window.open("","option","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,copyhistory=0,resizable=1,width=300,height=200");
        wo.location.href=filename;
}

function popwindow(filename){
var wo
window.name="main";   
wo=window.open("","option","toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,copyhistory=0,resizable=0,width=550,height=550");
        wo.location.href=filename;
}