var slideMenu=function(){
	var sp,st,t,m,sa,l,w,sw,ot;
	return{
		build:function(sm,sw,mt,s,sl,h){
			sp=s; st=sw; t=mt;
			m=document.getElementById(sm);
			m.className += " JS";
			sa=m.getElementsByTagName('li');
			l=sa.length; w=m.offsetWidth; sw=w/l;
			ot=Math.floor((w-st)/(l-1)); var i=0;
			for(i;i<l;i++){s=sa[i]; s.style.width=sw+'px'; this.timer(s)}
			if(sl!=null){
				m.timer=setInterval(function(){slideMenu.slide(sa[sl-1])},t);
				// Set new active item
				m.last = sa[sl-1];
				sa[sl-1].className = "active";
			}
		},
		timer:function(s){
			// Add HTML overlay
			var dark = document.createElement("div");
			dark.className = "dark";
			dark.style.filter = "alpha(opacity=70)";
			s.appendChild(dark);

			// Add 'enlarge' icon
			var enlargeIcon = document.createElement("span");
			enlargeIcon.className = "enlarge";
			s.getElementsByTagName('a')[0].appendChild(enlargeIcon);

			// Set onmouseover handler
			s.onmouseover=function(){
				if (m.last && m.last != s) {
					// Remove class from previous active item
					m.last.className = "";
				}
				// Set new active item
				m.last = s;
				s.className = "active";
				// Start new animation
				clearInterval(m.timer);m.timer=setInterval(function(){slideMenu.slide(s)},t)
			}
		},
		slide:function(s){
			var cw=parseInt(s.style.width,'10');
			if(cw<st){
				var owt=0; var i=0;
				for(i;i<l;i++){
					if(sa[i]!=s){
						var o,ow; var oi=0; o=sa[i]; ow=parseInt(o.style.width,'10');
						if(ow>ot){oi=Math.floor((ow-ot)/sp); oi=(oi>0)?oi:1; o.style.width=(ow-oi)+'px'}
						owt=owt+(ow-oi)}}
				s.style.width=(w-owt)+'px';
			}else{clearInterval(m.timer)}
		}
	};
}();


$(function(){
	slideMenu.build('projectImages',600,10,15,1);
});