function setElementsVisibility(eContainer, aTagNames, sVisibility) {
	var tmp, i, j;
 	var elements = [];
 	for (i = 0; i < aTagNames.length; i++) {
 		tmp = eContainer.getElementsByTagName(aTagNames[i]);
 		for (j = 0; j < tmp.length; j++) {
 			elements[elements.length] = tmp[j];
 		}
 	}	
 	for (i = 0; i < elements.length; i++) {
 		elements[i].style.visibility = sVisibility;
 	}
 }


startList = function() {
	if (document.getElementById) {
		navRoot = document.getElementById("navigation");
		if (navRoot)
		{
		    for (i=0; i<navRoot.childNodes.length; i++) {
			    node = navRoot.childNodes[i];
			    if (node.nodeName=="LI") {
				    node.onmouseover=function() {
					    this.className+=" over";
					    setElementsVisibility(document.getElementById("content-container"), ['select'], 'hidden');
				    }
				    node.onmouseout=function() {
					    this.className=this.className.replace(" over", "");
					    setElementsVisibility(document.getElementById("content-container"), ['select'], 'visible');
				    }
			    }
		    }
		}
	}
}

window.onload = startList;