addEvent(window, 'load', setup);

function setup() {
	initExternalLinks();
	accordian();
        addMainNavigationMouseOverEvents();
}

function initExternalLinks() {
	if (!document.getElementsByTagName) return;
	var anchors = document.getElementsByTagName('a');
	for (var i = 0; i < anchors.length; i++) {
		var anchor = anchors[i];
		if (anchor.getAttribute('href') && anchor.getAttribute('rel') == 'external') {
			anchor.target = '_blank';
		}
	}
}

sfHover = function() {
	if (!document.getElementById("home-main")) return;
	var sfEls = document.getElementById("home-main").getElementsByTagName("td");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);

accordianActive = null;
accordian = function() {
	if (!document.getElementById("home-accordian")) return;
	var cells = document.getElementById("home-accordian").getElementsByTagName("li");

	for (var i = 0; i < cells.length; i++) {
		var cell = cells[i];
		if (cell.className == "") continue;

		cell.onclick = function() {
			if (accordianActive == this) return;
			if (accordianActive) {
				accordianActive.className = accordianActive.className.replace(/ active/, "");
			}

			this.className += " active";
			accordianActive = this;
		};

		if (i == 0) {
			cell.onclick();
		}
	}
};

function addMainNavigationMouseOverEvents () {                  
        if (document.all&&document.getElementById) {    
          navRoot = document.getElementById("main_nav");
          for (i=0; i<navRoot.childNodes.length; i++) { 
            node = navRoot.childNodes[i];       
            if (node.nodeName=="LI") {  
              node.onmouseover=function() {
                var uls = this.getElementsByTagName('UL');
                if (uls[0])
                    uls[0].style.display='block';
              }                                 
              node.onmouseout=function() {
                var uls = this.getElementsByTagName('UL');
                if (uls[0])
                    uls[0].style.display='none';
              }
            }
          }
        }
}