function navit() {
	var me=this;
	this.imgs=null;
	this.imgso=null;

	this.add=function(img,imgo) {
		if (this.imgs==null) this.imgs=new Array();
		if (this.imgso==null) this.imgso=new Array();

		var idx=this.imgs.length;

		this.imgs[idx]=new Image();
		this.imgs[idx].src=img;
		this.imgso[idx]=new Image();
		this.imgso[idx].src=imgo;
	}
	this.init=function(container) {
		var mlinks=document.getElementById(container).getElementsByTagName('a');
		for (var i=0 ; i<mlinks.length ; i++) {
			mlinks[i].onmouseover=function() { me.mOv(this); };
			mlinks[i].onmouseout=function() { me.mOut(this); };
		}
	}
	this.mOv=function(link) {
		this.setSrc(link,true);
	}
	this.mOut=function(link) {
		this.setSrc(link,false);
	}
	this.setSrc=function(link,over) {
		var img=link.childNodes[0];
		if (img!=null) {
			var src=img.src;
			var newsrc='';
			for (var i=0 ; i<this.imgs.length && newsrc=='' ; i++) {
				if (this.imgs[i].src.indexOf(src)!=-1 || this.imgso[i].src.indexOf(src)!=-1)
					newsrc=(over ? this.imgso[i].src : this.imgs[i].src);
			}
			if (newsrc.length>0) img.src=newsrc;
		}
	}
}