function open_win(url, target)
{
window.open(url,target,"toolbar=no, location=yes, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, fullscreen=yes, width=screen.width, height=screen.height");
}

function fullscreen(url)
{
window.open(url,"_blank","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, fullscreen=yes, width=screen.width, height=screen.height")
}

function NewWindow(url)
{
window.open(url,"_blank","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, fullscreen=no, width=400, height=300")
}

function open_chat(url)
{
window.open(url,"_blank","toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=yes, resizable=yes, copyhistory=yes, fullscreen=yes, width=800, height=600")
}