$(document).ready(function() {
	$("ul#topnav li").hover(function() { //Hover over event on list item
	$(this).css({ 'background' : '#83869e'}); //Add background color and image on hovered list item
	$(this).find("span").show(); //Show the subnav
} , function() { //on hover out...

	$(this).css({ 'background' : 'none'}); //Ditch the background
	$(this).find("span").hide(); //Hide the subnav
	});
});
// END THE DOM


// main function to handle the mouse events //
function ddMenu(id,dir) {
  var head = document.getElementById(id + '-ddheader');
  var cont = document.getElementById(id + '-ddcontent');
  clearInterval(cont.timer);
  if(dir == 1) {
    clearTimeout(head.timer);
    if(cont.maxh && cont.maxh <= cont.offsetHeight) {
      return;
    } else if(!cont.maxh) {
      cont.style.display = 'block';
      cont.style.height = 'auto';
      cont.style.top = cont.style.height;
      cont.maxh = cont.offsetHeight;
      cont.style.height = '0px';
    }
    cont.timer = setInterval("ddSlide('" + id + "-ddcontent', 1)", DDTIMER);
  } else {
    head.timer = setTimeout('ddCollapse(\'' + id + '-ddcontent\')', 50);
  }
}

// collapse the menu //
function ddCollapse(id) {
  var cont = document.getElementById(id);
  cont.timer = setInterval("ddSlide('" + id + "', -1)", DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown content //
function cancelHide(id) {
  var head = document.getElementById(id + '-ddheader');
  var cont = document.getElementById(id + '-ddcontent');
  clearTimeout(head.timer);
  clearInterval(cont.timer);
  if(cont.offsetHeight < cont.maxh) {
    cont.timer = setInterval("ddSlide('" + id + "-ddcontent', 1)", DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(id,dir) {
  var cont = document.getElementById(id);
  var currheight = cont.offsetHeight;
  var dist;
  var topPX = 437;
  
//  if ($.browser.msie && $.browser.version.substr(0,1)<9){
//  if ($.browser.msie){
//	  var topPX = 410;
//	} else {var topPX = 442;}
  if(dir == 1) {
    dist = (Math.round((cont.maxh - currheight) / DDSPEED));
  } else {
    dist = (Math.round(currheight / DDSPEED));
  }
  if(dist <= 1) {
    dist = 1;
  }
  cont.style.height = currheight + (dist * dir) + 'px';
  cont.style.top = topPX-currheight /*+ 10 +(dist * dir) */+ 'px';
  cont.style.opacity = currheight / cont.maxh;
  cont.style.filter = 'alpha(opacity=' + (currheight * 100 / cont.maxh) + ')';
  if((currheight < 2 && dir != 1) || (currheight > (cont.maxh - 2) && dir == 1)) {
    clearInterval(cont.timer);
  }
}