function popup(popup_url,name,width,height) {
size = 'width=' + width + ',height=' + height;
window.open(popup_url,name,'resizable=no,menubar=no,location=no,toolbar=no,status=no,scrollbars=no,directories=no,top=0,left=0,'+size);
}

function popupscroll(popup_url,name,width,height) {
size = 'width=' + width + ',height=' + height;
window.open(popup_url,name,'resizable=yes,menubar=no,location=no,toolbar=no,status=no,scrollbars=yes,directories=no,top=0,left=0,'+size);
}

function popupfull(popup_url,name) {
window.open(popup_url,name,'resizable=no,menubar=no,location=no,toolbar=no,status=no,scrollbars=yes,directories=no,fullscreen=yes');
}

function fullnavigation(popup_url,name) {
window.open(popup_url,name,'channelmode,resizable=no');
}