Nav = function(el) {
	this.el = $(el);
	this.a = null;
	this.subNav = null;
	this.index = null;
	this.init();
}

Nav.itemIndex = 0;;

Nav.shimEl = null;

Nav.searchedCurrentLiEl = false;

Nav.prototype.init = function() {

	var hasChildren = this.el.hasClassName("hasChildren");

	if (hasChildren) {

		this.index = Nav.itemIndex++;

//		if (!/WebKit/i.test(navigator.userAgent)) { // sniff out Safari and disable drop-down menus
			this.el.observe("mouseover", this.doOver.bindAsEventListener(this) );
			this.el.observe("mouseout", this.doOut.bindAsEventListener(this) );
			this.el.observe("focus", this.show.bind(this) );
			this.el.observe("blur", this.hide.bind(this) );
//		} else {
			// with drop-downs disabled, safari has -1px top margin shift because of lack of border.
			// these observes will remove that style on hover.
//			//this.el.observe("mouseover",function(){this.el.down().setStyle({backgroundPosition:'50% -24px'});}.bind(this));
//			//this.el.observe("mouseout",function(){this.el.down().setStyle({backgroundPosition:'50% 1px'});}.bind(this));
//		}

		this.subNav = this.el.getElementsBySelector(".navSubItem")[0];

		if (this.subNav) {

			this.a = this.el.down().cloneNode(true);
			var li = $(document.createElement('li'));
			li.appendChild(this.a);
			if (this.el.hasClassName('currentItem') && !this.el.hasClassName('currentParent')) { li.addClassName('currentItem') }
			if(this.a.innerHTML != 'Submit an Idea' && this.a.innerHTML != 'Contact Information'){	//don't do this for submit an idea and contact info
				this.subNav.insertBefore(li,this.subNav.down());
			}
			var subNavWrapper = $(document.createElement('div'));
			subNavWrapper.addClassName('currentItem');
			if ($('skipToContent')) subNavWrapper.appendChild($('skipToContent'));
			subNavWrapper.appendChild(this.subNav);

			$("navigation").appendChild(subNavWrapper);
		}
	}
}

Nav.prototype.doOver = function(e) {
	if (detectMouseEnter(this.el,e)) {
		this.show();
	}
	Event.stop(e);
	return false;
}

Nav.prototype.doOut = function(e) {
	if (detectMouseLeave(this.el,e)) {
		this.hide();
	}
	Event.stop(e);
	return false;
}

Nav.prototype.show = function() {
	this.el.addClassName('activeItem');

	var html = ddcontent[this.index];

	new Insertion.After(this.el.down(), html);

	var newEl = this.el.down().next();
	
		if (this.el.id=="nav_about") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<3;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}

	if (this.el.id=="nav_academics") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<5;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}
		if (this.el.id=="nav_administration") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<3;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}
	if (this.el.id=="nav_alumni") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<3;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}

		if (this.el.id=="nav_health") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<3;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}
		if (this.el.id=="nav_future") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<3;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}
		if (this.el.id=="nav_ministry") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		//for (var r=0;r<4;r++) {
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}
		if (this.el.id=="nav_students") {
		var elGroupLI = newEl.immediateDescendants();
		// elGroupLI.pop().remove(); //remove this line to add last element (A-Z index) back
		var numLI = elGroupLI.length;
		var rowCount = 3; // Math.floor(numLI/3);
		var colCount = Math.ceil(numLI/rowCount);
		// var remainder = numLI%3;
		var index = 0;
		for (var r=0;r<colCount;r++) {
			var elLI = new Element('li',{className:'navGroup'});
			var elGroupUL = new Element('ul');
			// var c = (0<remainder--)?rowCount+1:rowCount;
			for (var n=0;n<rowCount;n++) {
				if (index >= numLI) break;
				elGroupUL.appendChild(elGroupLI[index++]);
			}
			elLI.appendChild(elGroupUL);
			newEl.appendChild(elLI);
		}
	}

	if (/MSIE/i.test(navigator.userAgent)) {
		//var shimEl = this.getShimEl();
		//Position.clone(newEl, shimEl);
		//shimEl.setStyle({zIndex:"1", visibility:"inherit" });
	}
}

Nav.prototype.hide = function() {
	this.el.removeClassName('activeItem');

	var tmp = this.el.down().next();
	if (tmp) { tmp.remove(); }
	// this.el.down().next().remove();

	if (/MSIE/i.test(navigator.userAgent)) {
		//this.getShimEl().setStyle({visibility:"hidden"});
	}
}

Nav.prototype.getShimEl = function() {
//	if (Nav.shimEl==null) {
		//Nav.shimEl = new Element( "iframe", {style:"visibility:hidden;background:white;position:absolute; top:0px; left:0px;", frameBorder:"0", scrolling:"no"});
		//Nav.shimEl.src="://";
		//Nav.shimEl.src=baselink+"blank.htm";
//		Nav.shimEl.src="www2.creighton.edu/fileadmin/projects/cu-main/includes/blank.htm";
		//Nav.shimEl.setOpacity(.01);
//		document.body.appendChild(Nav.shimEl);
//	}
//	return Nav.shimEl;
}


Main.mapFnToCSS("navItem",Nav);