function navMouseOut()
{
	this.src = this.src.replace(/b\.(jpg|gif)$/, "a.$1");
}
function navMouseOver()
{
	this.src = this.src.replace(/a\.(jpg|gif)$/, "b.$1");
}

function initNavSection(sectionToInit)
{
	var links = sectionToInit.getElementsByTagName("a");

	for ( i = 0; i < links.length; i++ )
	{
		var linkedImages = links[i].getElementsByTagName("img");

		for ( c = 0; c < linkedImages.length; c++ )
		{
			var tempImage = new Image();
		    
			tempImage.src = linkedImages[c].src;
			linkedImages[c].onmouseover = navMouseOver;
			linkedImages[c].onmouseout = navMouseOut;
		}
	}
}