function nav2_init()
{
	if (document.getElementById)
		var x = document.getElementById('nav23').getElementsByTagName('IMG');
	else if (document.all)
		var x = document.all['nav23'].all.tags('IMG');
	else return;
	var preloads = new Object();
	for (var i=0;i<x.length;i++)
	{
		var y = x[i].src;
		if ( y.substring(y.length-8) != '_(o).gif' )
		{
			preloads['n'+x[i].id] = new Image;
			preloads['n'+x[i].id].src = '../img/nav2/'+ x[i].id + '.gif';
			preloads['o'+x[i].id] = new Image;
			preloads['o'+x[i].id].src = '../img/nav2/'+ x[i].id + '_(o).gif';
			preloads['o'+x[i].id].onerror = function () {this.src='../img/nav2/_dot.gif'}
			x[i].onmouseover = function () {this.src=preloads['o'+this.id].src;}
			x[i].onmouseout = function () {this.src=preloads['n'+this.id].src;}
		}
	}
}