var vis = 0;

function getTechParam() {
    var id = window.document.getElementById("tContent");
    
    if (id.style.visibility == "visible" ) {
        id.style.visibility = "hidden";
        } else { 
            id.style.visibility = "visible";
        }
        
        return false;
}

function OpenW(url, wd, hg) {
    window.open(url,'WindowNW', "'width=" + wd + "', height=" + hg + "', toolbar=no, status=no, menubar=no, resizable=no, scrollbars=no")
}