function popup(name,w,h){
        posX=((screen.availWidth-w)/2);
        posY=((screen.availHeight-h)/2);
        window.open(name,"popup", "toolbar=0,location=0, directories=0, status=0, menubar=0, scrollbars=0, resizable=0, width="+w+", height="+h+",left="+posX+",top="+posY);
}

function popupScroll(name,w,h){
        posX=((screen.availWidth-w)/2);
        posY=((screen.availHeight-h)/2);
        window.open(name,"popup", "toolbar=0,location=0, directories=0, status=0, menubar=0, scrollbars=yes, resizable=0, width="+w+", height="+h+",left="+posX+",top="+posY);
}