//Submenu toggle

arrowon = new Image();
arrowon.src = '../images/nav/arrow-on.gif';
arrowoff = new Image();
arrowoff.src = '../images/nav/arrow-off.gif';

function blurry(obj) {
	if (!document.layers) obj.blur();
}

function toggleNav(n) {
	arr = document.images['navarr'+n];
	men = document.getElementById('nav'+n).style;
	if (arr.src==arrowon.src) {
		arr.src = arrowoff.src;
		men.display = 'none';
	} else {
		arr.src = arrowon.src;
		men.display = 'block';
	}
}

// JavaScript Document
// CHECK CLIENT BROWSER & PLATFORM
// Works: IE4+, NS4+, Opera

	var its;
	var browserName = '';
	var browserNameLong = '';
	var browserNew = '';
	var preloadFlag = false;
	var Macintosh = navigator.userAgent.indexOf('Mac')>0;

	function its() {
		var n = navigator;
		var ua = ' ' + n.userAgent.toLowerCase();
		var pl = n.platform.toLowerCase();
		var an = n.appName.toLowerCase();

		// browser version
		this.version = n.appVersion;
		this.nn = ua.indexOf('mozilla') > 0;

		// 'compatible' versions of mozilla aren't navigator
		if(ua.indexOf('compatible') > 0) {
			this.nn = false;
		}
		
		this.opera = ua.indexOf('opera') > 0;
		this.ie = ua.indexOf('msie') > 0;
		this.major = parseInt( this.version );
		this.minor = parseFloat( this.version );

		// platform
		this.mac = ua.indexOf('mac') > 0;
		this.win = ua.indexOf('win') > 0;

		// workaround for IE5 which reports itself as version 4.0
		if(this.ie) {
			if(ua.indexOf("msie 5") > 1) {
			var msieIndex = navigator.appVersion.indexOf("MSIE") + 5;
			this.major = parseFloat(navigator.appVersion.substr(msieIndex,3));
			}
		}

		return this;
	}

	function browserNaming() {
		its = new its();
		
		// is it a DOM-enabled browser?
		if (!document.getElementById) {
			browserNew = false;
		}
		else {
			browserNew = true;
		}

		// need the name, too
		if (its.opera) {
			browserName = "Opera";
		}
		else if (its.ie) {
			browserName = "IE";
		}
		else {
			browserName = "NS";
		}

		// and the number
		browserNameLong = browserName + its.major;
	}
	

// PRELOADING THE MOUSEOVER IMAGES
// Works: IE4+, NS4+, Opera

	function createObject(imgName,imgSrc) {
		if (loadingFlag) {
			eval(imgName + ' = new Image()');
			eval(imgName + '.src = "' + imgSrc + '"');
			return imgName;
		}
	}


// MOUSEOVER IMAGE SWITCHING
// Works: IE4+, NS4+, Opera
// Notes: NS4 needs the DIV-name in there if image is in a DIV

	function changeImage(layer,imgName,imgObj) {
		if (preloadFlag) {
			if (browserNew) {
				document.getElementById(imgName).src = eval(imgObj+'.src');
			}
			if ((!browserNew) && (browserName == "NS") && (layer!=null)) {
				eval('document.'+layer+'.document.images["'+imgName+'"].src = '+imgObj+'.src');
			}
			else {
				document.images[imgName].src = eval(imgObj+'.src');
			}
		}
	}


// POPUP WINDOW
// Works: IE4+, NS4+, Opera
// Notes: IE4/IE4.5 for the mac spawns windows 17px too short

	function spawn(desktopURL,windowName,width,height) {
		if ((Macintosh) && ((browserNameLong == "IE4") || (browserNameLong == "IE4.5"))) {
 			var newheight = parseInt(height + 17);
		}
		else {
			var newheight = height;
		}
		window.open(desktopURL,windowName,'toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=1,width='+width+',height='+newheight+',resizable=0');
	}


	function spawnEvil(desktopURL,windowName,width,height) {
 		window.open(desktopURL,windowName,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,width='+width+',height='+height+',resizable=0');
	}
	

	
// REMOVES THE LINK BORDER IN IE4+, NS6
// Works: IE4+, NS6+
// Notes: In NS6 the select tags are not blurred

	function unblur() {
		this.blur();
	}

	function getLinksToBlur() {
		if ((browserNew) || (browserName == "IE")) {
			if (browserNew) {
				links = document.getElementsByTagName("a");
			}
			else {
				links = document.all.tags("a");
			}
			for(i=0; i<links.length; i++) {
				links[i].onfocus = unblur
			}
		}
		if (browserName == "IE") {
			if (browserNew) {
				drops = document.getElementsByTagName("select");
			}
			else {
				drops = document.all.tags("select");
			}
			for(i=0; i<drops.length; i++) {
				drops[i].onfocus = unblur
			}
		}
	}


// DOM / GET PROPERTY
// Works: IE5+, NS6+, Opera

	function getIdProperty(id,property) {
		var styleObject = document.getElementById( id );
		if (styleObject != null) {
			styleObject = styleObject.style;
				if (styleObject[property]) {
					return styleObject[ property ];
				}
			}
		return (styleObject != null) ?
		styleObject[property] :
		null;
	}


// DOM / SET PROPERTY
// Works: IE5+, NS6+, Opera

	function setIdProperty(id,property,value) {
		var styleObject = document.getElementById( id );
		if (styleObject != null) {
			styleObject = styleObject.style;
			styleObject[ property ] = value;
		}
	}


// HIDE AND SHOW LAYERS
// Works: IE4+, NS4+, Opera

	function hide(id) {
		if (browserNew) {
			setIdProperty(id,"visibility","hidden");
		}
		else {
			if (browserName == "NS") { document.layers[id].visibility = "hide"; }
			else { document.all[id].style.visibility = "hidden"; }
		}
	}

	function show(id) {
		if (browserNew) {
			setIdProperty(id,"visibility","visible");
		}
		else {
			if (browserName == "NS") { document.layers[id].visibility = "show"; }
			else { document.all[id].style.visibility = "visible"; }
		}
	}


// RANDOM NUMBER GENERATOR
// Works: IE4+, NS4+, Opera

	function randNum (num) {
		var now = new Date();
		var rand = Math.round(num * Math.cos(now.getTime()));
		if (rand < 0) rand = - rand; 
		if (rand == 0) rand++;
		return rand;
	}