var hovering = false;
var oldImageName, oldImageSource;

function checkMenuItem (currentPage) {

	var linkName = "menu-" + currentPage;

	if (currentPage != "home" && document.getElementById(linkName).style) { 
		document.getElementById(linkName).style.backgroundPosition = "center bottom";
	}
}

//to obfuscate further, use HTML chars.
function sendMail(login, server)
{
	var address = "mail" + "" + "to:" + login + "@" + server;
	window.location.href = address;
}


function showDiv(divName) {

	clearAll();	
	
	if (document.getElementById) { 
		document.getElementById(divName).style.visibility = 'visible';
		document.getElementById(divName).style.display = 'block';
		
		var a;
		var changedColour = false;
		var links = document.getElementById("main-content").getElementsByTagName('a');
		
		for (a = 0; a < links.length; a++) {
		
			if (links[a].style) {
				
				if (links[a].href.indexOf(divName) != -1 && !changedColour) {	//selected submenu link
					links[a].style.color = '#2a2a2a';
					changedColour = true;
				}
				
				else if (links[a].innerHTML.indexOf("pdf-link") != -1) {	//PDF link
					links[a].style.color = '#2a2a2a';
				}
				else {
					links[a].style.color = '#03527c';		//default
				}
			}
		}		
	}
	else {													//UNTESTED BELOW
		if (document.layers) { // Netscape 4
			document.divName.visibility = 'visible';
		}
	}
} 

function toggleDiv(divName) {
	if (document.getElementById) { 
	
		var displayDiv = false;
		if (document.getElementById(divName).style.display != 'block') 		displayDiv = true;
		
		var allDivs = document.getElementsByTagName("div");
		for (var i=0; i<allDivs.length; i++) {
			if(allDivs[i].getAttribute("class") == "dropdown") {
				allDivs[i].style.display = 'none';
			} 
		}
		
		if (displayDiv)		document.getElementById(divName).style.display = 'block';
	

	}
}

//hides all content.
function clearAll() {
	
	var allDivs = document.getElementsByTagName("div");
	for (var i=0; i<allDivs.length; i++) {
		if(allDivs[i].getAttribute("class") == "invisible-div" || allDivs[i].getAttribute("id") == "default") {
			allDivs[i].style.display = 'none';
		} 
	}
}