var newWin = null;

function popUp(strURL, strType, strWidth, strHeight ) {
    if (newWin != null && !newWin.closed)
        newWin.close();
    var strOptions="";
    if (strType=="console")
        strOptions="scrollbars,resizable,height="+strHeight+",width="+strWidth;
    if (strType=="fixed")
        strOptions="status,height="+strHeight+",width="+strWidth;
    if (strType=="elastic")
        strOptions="toolbar,menubar,scrollbars,"+"resizable,location,height="+strHeight+",width="+strWidth;
    newWin = window.open(strURL, 'newWin', strOptions);
    newWin.focus();
}