/*******************\
 > Rotating Images <
\*******************/

		var numImages = 5;
		var randomNum = Math.floor(Math.random()*numImages);
		var randomImages = new Array();
		
		for(i = 0; i < numImages; i++){
			randomImages[i] = "/overdrive/design2/images/rotating/rotate" + (i+1) + ".jpg";
		}
		
		function getRandomHeader(id){
				var x=document.getElementById(id)
					if (document.getElementById) { // DOM3 = IE5, NS6
						x.style.backgroundImage = 'url('+randomImages[randomNum]+')';
						} else {
					if (document.layers) { // Netscape 4
						alertID(id);
						document.id.backgroundImage = 'url('+randomImages[randomNum]+')';
						}
					else { // IE 4
						document.all.id.style.backgroundImage = 'url('+randomImages[randomNum]+')';
						
		}
	}
}

function alertID(elem) {
	elem=document.getElementById(elem)
	var txt="Id: " + elem.id
	txt=txt + ", type: " + elem.type
	txt=txt + ", value: " + elem.value
	txt=txt + ", innerHTML: " + elem.innerHTML
	alert(txt)
	elem.disabled=true
}


/********************\
 )		subnav		(
\********************/
function toggleOn(id, lnk) {	
	//safe function to show an element with a specified id
	
	var x=document.getElementById(id)
	
	if (document.getElementById) { // DOM3 = IE5, NS6
		x.style.display = 'block';
	} else {
		if (document.layers) { // Netscape 4
		alertID(id);
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
	//toggleRO(imageName,image);
	highlightOn(lnk);
}

function toggleOff(id, lnk) {
	var x=document.getElementById(id)
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		x.style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
	//toggleRO(imageName,image);
	if(getSection() + "DD" != document.getElementById(id).id){
	highlightOff(lnk);
	}
}

function getSection() {
	var x = getURL();
	
	if (x == "about" || x =="mission" || x =="leadership" || x =="committees" || x =="member_profiles"){ return "about"; }
	else if (x == "membership" || x =="member_benefits" || x =="how_to_join" || x =="how_to_renew"){ return "membership"; }
	else if (x == "events" || x =="calendar" || x =="event_archive") { return "events"; }
	else if (x == "news" || x =="print_newsletter" || x =="news_archive" || x =="member_news" || x =="photo_gallery"){ return "news"; }
	else if (x == "resources" || x =="mentoring" || x =="career_services" || x =="links") { return "resources"; }
}

function getURL(){
	var strHref = window.location.href;
	var temp;
	
	strHref = strHref.substr(strHref.lastIndexOf("/") + 1, strHref.length);
	strHref = strHref.substr(0, strHref.indexOf("."));
	return strHref;
}

function toggleRO(imageName,image){
		document[imageName].src= image;
}


function highlightOn(lnk) {
			document.getElementById(lnk).style.background = '#FFFFFF';
			document.getElementById(lnk).style.color = '#4d5477';
}
function highlightOff(lnk) {
	document.getElementById(lnk).style.color = '#FFFFFF';
	document.getElementById(lnk).style.background = '#4d5477';
}

function changeColor(button, id){
	document.getElementById(id).style.color = '#FFFFFF';
	button.style.background = '#A3754B';
}

function changeBack(button, id){
	document.getElementById(id).style.color = '#A3754B';
	button.style.background = '#FFFFFF';
}

function randomImage(is_index){
	if(is_index == true)
		document.write("<img src='/images/home_rotating/home" + Math.ceil(Math.random() * 4) + ".jpg' alt='' />");
	else
		document.write("<img src='/images/sub_rotating/sub" + Math.ceil(Math.random() * 8) + ".jpg' alt='' />");
}

/********************\
 )		/subnav		(
\********************/