klikbare links i en <div>

Jeg kan ikke klikke på mine links i div'en hvorfor det?


function visDIV(id,vis,x,y,usr,numb)
{
clearTime('over');

    if(NS4)
    {
        m=document[id];
        m.visibility=vis?"show":"hide";
        m.left = x+'px';
        m.top = y+'px';
    }
    else
    {
        m=false;
        if(W3C) m=document.getElementById(id);
        if(IE4) m=document.all[id];
        m.style.visibility=vis?"visible":"hidden";
        m.style.left = x+'px';
        m.style.top = y+'px';

    document.getElementById("menu_Show").innerHTML = "<span class='font'><font color='#FFCC00'><b>"+usr+"</b></font></span><br>";
    document.getElementById("menu_Show").innerHTML = "" + document.getElementById("menu_Show").innerHTML + "<a href='link'>Skriv til</A><br>";
    document.getElementById("menu_Show").innerHTML = "" + document.getElementById("menu_Show").innerHTML + "<a href='link'>Skriv privat til</A><br>";
    document.getElementById("menu_Show").innerHTML = "" + document.getElementById("menu_Show").innerHTML + "<a href='link'>Se profil</A><br>";
    document.getElementById("menu_Show").innerHTML = "" + document.getElementById("menu_Show").innerHTML + "<a href='link'>Tilføj favorit</A><br>";
    document.getElementById("menu_Show").innerHTML = "" + document.getElementById("menu_Show").innerHTML + "<a href='link'>Skriv brev</A><br>";
    }
}


<div onclick="return false" onmouseout="clearTime('out');" onmouseover="clearTime('over');" style="position:absolute;VISIBILITY: hidden; padding:4; background-color: #003C64; border:1 solid black; width:97" id="menu_Show" name="menu_Show"></div>