// Created a long, long time ago by Tanny O'Haley
// Update history.
// 24 Oct 2006 - Added to http://tanny.ica.com
// 14 Jul 2006 - Modified the way the iframe is added to the DOM. I no longer use 
//      innerHTML but use DOM methods.
// 15 Sep 2006 - Added a check to see if the target element onmouseout is contained
//      in the onmouseout element. If it is then I dont' remove the
//      sfhover class. I made use of the Microsoft proprietary
//      obj.contains() method.
//     Added check to make sure that the sfhover class is not already in
//      the li element.
//
sfHover = function() {
  // Support the standard nav without a class of nav.
  var el = document.getElementById("nav");
  if(!/\bnav\b/.test(el.className) && el.tagName == "UL")
    setHover(el);

  // Find all unordered lists.
  var ieNavs = document.getElementsByTagName('ul');
  for(i=0; i<ieNavs.length; i++) {
    var ul = ieNavs[i];
    // If they have a class of nav add the menu hover.
    if(/\bnav\b/.test(ul.className))
      setHover(ul);
  }

}

function setHover(nav) {
  var ieULs = nav.getElementsByTagName('ul');
  if (navigator.appVersion.substr(22,3)!="5.0") {
    // IE script to cover <select> elements with <iframe>s
    for (j=0; j<ieULs.length; j++) {
      var ieMat=document.createElement('iframe');
      if(document.location.protocol == "https:")
        ieMat.src="//0";
      else if(window.opera != "undefined")
        ieMat.src="";
      else
        ieMat.src="javascript:false";
      ieMat.scrolling="no";
      ieMat.frameBorder="0";
      ieMat.style.width=ieULs[j].offsetWidth+"px";
      ieMat.style.height="0px";
      ieMat.style.zIndex="-1";
      ieULs[j].insertBefore(ieMat, ieULs[j].childNodes[0]);
      ieULs[j].style.zIndex="101";
    }
    // IE script to change class on mouseover
    var ieLIs = nav.getElementsByTagName('li');
    for (var i=0; i<ieLIs.length; i++) if (ieLIs[i]) {
      // Add a sfhover class to the li.
      ieLIs[i].onmouseover=function() {
        if(!/\bsfhover\b/.test(this.className))
          this.className+=" sfhover";
      }
      ieLIs[i].onmouseout=function() {
        if(!this.contains(event.toElement))
          this.className=this.className.replace(' sfhover', '');
      }
    }
  } else {
    // IE 5.0 doesn't support iframes so hide the select statements on hover and show on mouse out.
    // IE script to change class on mouseover
    var ieLIs = document.getElementById('nav').getElementsByTagName('li');
    for (var i=0; i<ieLIs.length; i++) if (ieLIs[i]) {
      ieLIs[i].onmouseover=function() {this.className+=" sfhover";hideSelects();}
      ieLIs[i].onmouseout=function() {this.className=this.className.replace(' sfhover', '');showSelects()}
    }
  }
}

// If IE 5.0 hide and show the select statements.
function hideSelects(){
  var oSelects=document.getElementsByTagName("select");
  for(var i=0;i<oSelects.length;i++)
    oSelects[i].className+=" hide";
}

function showSelects(){
  var oSelects=document.getElementsByTagName("select");
  for(var i=0;i<oSelects.length;i++)
    oSelects[i].className=oSelects[i].className.replace(" hide","");
}

// Run this only for IE.
if (window.attachEvent) window.attachEvent('onload', sfHover);
// end