var win=null;

function dtopenwin(mypage,myname,w,h,scroll,pos)
{
if (pos=="random") {
LeftPosition = (screen.width) ? Math.floor(Math.random()*(screen.width-w)):100;
TopPosition = (screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;
}
if(pos=="center") {
LeftPosition = (screen.width)?(screen.width-w)/2:100;
TopPosition=(screen.height)?(screen.height-h)/2:100;
} else if ((pos!="center" && pos!="random") || pos==null) {
LeftPosition=0;TopPosition=20
}
settings = 'width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);
}