IE4 = (document.all) ? 1 : 0;
NS4 = (document.layers) ? 1 : 0;
DOM = (document.getElementById) ? 1 : 0;
verOK = (IE4 || NS4 || DOM) ? 1 : 0;

if (verOK) {
    secondIm = '<img src="images/menuover.gif" width="649" height="16" border="0" alt="" usemap="#mapMainMenu" />';
    arPopups = new Array();
}
else { secondIm = "" }

function setBeginEnd(which,from,to) {
    arPopups[which] = new Array();
    arPopups[which][0] = from;
    arPopups[which][1] = to;
}

if (verOK) {
    setBeginEnd(1,0,216);
    setBeginEnd(2,217,283);
    setBeginEnd(3,284,404);
    setBeginEnd(4,405,516);
    setBeginEnd(5,517,638);
}

clTop = 0;
clBot = 16;

function mapOver(which,on) {
  if (!verOK) { return; }
  if (DOM) { whichEl = document.getElementById("elMenuOver").style; }
    else if (IE4) { whichEl = document.all.elMenuOver.style; }
    else { whichEl = document.elMenu.document.elMenuOver; }

  if (!on) { whichEl.visibility = "hidden"; return; }

  clLeft = arPopups[which][0];
  clRight = arPopups[which][1];

  if (NS4) {
    whichEl.clip.left = clLeft;
    whichEl.clip.right = clRight;
  } else {
    whichEl.clip = "rect(" + clTop + "px " + clRight + "px " + clBot + "px " + clLeft + "px)";
  }
  whichEl.visibility = "visible"; 
}