//rolover

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

// dropdown menu code

var numberOfNodes=5; //number of menu items

//check browser type
var ie5  = (document.all && document.getElementById);
var ns6 = (!document.all && document.getElementById);

var opac = 0;
var fadeObject=0;

function fadeIn() {
	if(opac < 80){
		opac+=5;
		if(ie5) document.getElementById(fadeObject).filters.alpha.opacity = opac;
		if(ns6) document.getElementById(fadeObject).style.MozOpacity = opac/100;
		setTimeout('fadeIn()', 50);
	}
}


function showMenuTest(menuNumber, eventObj) {
	hideAllMenus();
	eventObj.cancelBubble = true;
    if(changeObjectVisibility("myMenu"+menuNumber, 'visible')) {
		opac = 0;
		fadeObject="myMenu"+menuNumber
		fadeIn();
		return true;
    } else {
		return false;
    }
}

function getStyleObject(objectId) {
    if(document.getElementById && document.getElementById(objectId)) {
	return document.getElementById(objectId).style;
    } else if (document.all && document.all(objectId)) {
	return document.all(objectId).style;
    } else if (document.layers && document.layers[objectId]) {
	return document.layers[objectId];
    } else {
	return false;
    }
}

function changeObjectVisibility(objectId, newVisibility) {
    var styleObject = getStyleObject(objectId);
    if(styleObject) {
	styleObject.visibility = newVisibility;
	return true;
    } else {
	return false;
    }
}

function hideAllMenus(){
	for (var i=0; i<=numberOfNodes; i++) {
		changeObjectVisibility("myMenu"+i, 'hidden');
	}
}

// error class
function Errors() {
	this.errors = new Array();

	this.add = function(msg) {
		this.errors[this.errors.length] = msg;
	}
	this.alert = function() {
		if(!this.errors.length) return false;

		var msg = 'The following error(s) have occurred:\n\n';

		for(var i=0; i<this.errors.length; ++i) {
			msg += '*  ' + this.errors[i];
			if(i < this.errors.length - 1) msg += '\n\n';
		}

		alert(msg);
		return true;
	}
}

function validate_email(email) {
	if(email.length <= 5) return false;
	if(email.indexOf('@', 0) == -1) return false;
	return true;
}


function mainMenuOver(that) {
	var iname = that.id.substr(9);
	that.src = 'assets/images/mnu_'+iname+'-over.gif';
}

function mainMenuOut(that) {
	var iname = that.id.substr(9);
	that.src = 'assets/images/mnu_'+iname+'.gif';

	setMenuImageState(that);
}


// Show / Hide function
function show(that, k, more, less) {
	var what = document.getElementById('class'+k);

	if(what.style.display == 'none') {
		what.style.display = '';
		that.innerHTML = less;
	}
	else {
		what.style.display = 'none';
		that.innerHTML = more;
	}

}