/* SWIM2.0 :: Simple website menu
 ****************************************************************
 * DOM scripting by brothercake -- http://www.brothercake.com/
 * Licensed under GPL -- http://www.gnu.org/copyleft/gpl.html
 ****************************************************************
 * For professional menu solutions visit -- http://www.udm4.com/ 
 ****************************************************************
 */



window.onload = function()
{
    var verticals = new simpleMenu('menu-v', 'vertical');
    var horizontals = new simpleMenu('menu-h', 'horizontal');
}
;




function simpleMenu(navid, orient){
    if(typeof document.getElementById == 'undefined' || /opera[\/ ][56]/i.test(navigator.userAgent)) {
	return;
    }

    this.iskde = navigator.vendor == 'KDE';
    this.isie = typeof document.all != 'undefined' && typeof window.opera == 'undefined' && !this.iskde;
    this.isoldsaf = navigator.vendor == 'Apple Computer, Inc.' && typeof XMLHttpRequest == 'undefined';
    this.tree = document.getElementById(navid);

    if(this.tree != null) {
	this.items = this.tree.getElementsByTagName('li');
	this.itemsLen = this.items.length;
	var i = 0;

	do{
	    this.init(this.items[i], this.isie, this.isoldsaf, this.iskde, navid, orient);
	} while (++i < this.itemsLen);
    }
}



simpleMenu.prototype.init = function(trigger, isie, isoldsaf, iskde, navid, ishoriz){
    trigger.menu = trigger.getElementsByTagName('ul').length > 0 ? trigger.getElementsByTagName('ul')[0] : null;
    trigger.link = trigger.getElementsByTagName('a')[0];
    trigger.issub = trigger.parentNode.id == navid;
    trigger.ishoriz = ishoriz == 'horizontal';
    this.openers = {
	'm' : 'onmouseover', 'k' : (isie ? 'onactivate' : 'onfocus') }
    ;
    for(var i in this.openers){
	trigger[this.openers[i]] = function(e){
	    if(!iskde) {
		trigger.link.className += (trigger.link.className == '' ? '' : ' ') + 'rollover';
	    }
	    if(trigger.menu != null){
		if(trigger.ishoriz) {
		    trigger.menu.style.left = (isie || isoldsaf) ? trigger.offsetLeft + 'px' : 'auto';
		    trigger.menu.style.left = 'auto' ;
		}
		trigger.menu.style.top = (trigger.ishoriz && trigger.issub) ? (isie || (trigger.ishoriz && isoldsaf)) ? trigger.link.offsetHeight + 'px' : 'auto' : (isie || (trigger.ishoriz && isoldsaf)) ? trigger.offsetTop + 'px' : '0';
	    }
	}
	;
    }
    this.closers = {
	'm' : 'onmouseout', 'k' : (isie ? 'ondeactivate' : 'onblur') }
    ;
    for(i in this.closers){
	trigger[this.closers[i]] = function(e){
	    this.related = (!e) ? window.event.toElement : e.relatedTarget;
	    if(!this.contains(this.related)){
		if(!iskde) {
		    trigger.link.className = trigger.link.className.replace(/[ ]?rollover/g, '');
		}
		if(trigger.menu != null){
		    trigger.menu.style[(trigger.ishoriz ? 'left' : 'top')] = trigger.ishoriz ? '-10000px' : '-100em';
		}
	    }
	}
	;
    }
    if(!isie){
	trigger.contains = function(node){
	    if (node == null) {
		return false;
	    }
	    if (node == this) {
		return true;
	    }
	    else {
		return this.contains(node.parentNode);
	    }
	}
	;
    }
}