IE4 = (document.all) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
NS3 = (document.images) ? 1 : 0;

function launchWindow(URL,wide,high){
    scrnX = screen.availWidth;
    scrnY = screen.availHeight;
    leftPos = (scrnX - wide)/2;
    topPos = (scrnY - high)/2;
    str = "status=no,toolbar=no,scrollbars=no,resizable=no,width=" + wide + ",height=" + high + ",screenX=" + leftPos + ",screenY=" + topPos + ",left=" + leftPos + ",top=" + topPos;
    dialog = window.open(URL,"dialog",str);
}