function DelAlert() {
        return confirm("Are you sure want to delete this?");
}

function PopUpWindow(request_uri, top, left, width, height) {
        var param = 'toolbar=no,scrollbars=no,menubar=no,directories=no,status=no,width='+width+',height='+height+'left='+left+', top='+top+',screenX='+left+',screenY='+top;
        window.open(request_uri,'',param);
        return false;
}
function SelectAll(str, form, mark, checkboxname) {
        for (i = 0; i < form.elements.length; i++) {
        var item=form.elements[i];
        if ((item.name.indexOf(str)>=0) && (item.name == checkboxname)) {
                        item.checked = mark;
                };
        }
}