function GEBI(e) { return document.getElementById(e); }
 
function hide() {
    for (i = 0; i < arguments.length; i++) {
        var e = GEBI(arguments[i]);
        if (e) e.style.display = "none"; 
    }
}

function show() {
    for (i = 0; i < arguments.length; i++) {
        var e = GEBI(arguments[i]);
        if (e) e.style.display = ""; 
    }
}

function rowon(el) { el.className = "collapse d"; }
function rowoff(el) { el.className = "collapse r"; }

function helpon() {
    show("markhelp");
    GEBI("marklink").href = "javascript: helpoff()";
    GEBI("marklink").blur();
    rowon(GEBI("marktoggle"));
}

function helpoff() {
    hide("markhelp");
    GEBI("marklink").href = "javascript: helpon()";
    GEBI("marklink").blur();
    rowoff(GEBI("marktoggle"));
}