// JavaScript Document
// showDiv JavaScript Document
function showSubItem(toShow){
 	var tar = $(toShow);
	var endNum = toShow.indexOf('menu');
	var linkId = toShow.substr(0, endNum);
	turnOnHead(linkId);

	Effect.BlindDown(tar, {duration:0.5, delay:0.6});
 };
 
function hideSubItem(toHide){
	Effect.BlindUp($(toHide), {duration:0.5});
	var endNum = toHide.indexOf('menu');
	var linkId = toHide.substr(0, endNum);
	turnOffHead(linkId);
};
 
function turnOnHead(target, nohead){
	$(target+'A').style.color = "#525252";
	$(target).style.color = "#525252";
	if(!nohead){
		$(target).style.listStyleImage = 'url(../images/arrowdown.gif)';
	}
};

function turnOffHead(target){
	$(target+'A').style.color = "#a4a4a4";
	$(target).style.color = "#a4a4a4";
	$(target).style.listStyleImage = 'url(../images/spacer.gif)';
	$(target).style.listStyle = 'none';
};

function imageLoad(){
	arrowup = new Image();
	arrowup.src = "../images/arrow.gif";
	arrowdown = new Image();
	arrowdown.src = "../images/arrow-down.gif";
};
imageLoad();

function changeArrow(change){
	if ($('arrowimage').src == arrowup.src){
		 $('arrowimage').src = arrowdown.src;	
	}else if ($('arrowimage').src = arrowdown.src){
		 $('arrowimage').src = arrowup.src;
	}	
};

function hideAllsubmenus(){
	hideSubItem('approachmenu');
	hideSubItem('evolutionmenu');
	hideSubItem('componentsmenu');
	hideSubItem('teammenu');
};