function initNav() {

	/* Nav menus */

	var oMenu = document.getElementById('nav');
	
	var aMenus = oMenu.getElementsByTagName('img');
	
	var sActiveMenu = document.body.getAttribute('id');
	
	for(i=0; i< aMenus.length; i++) {
	
		var oMenu = aMenus[i];
		
		oMenu.src_off = oMenu.src;
		oMenu.src_on = oMenu.src.replace('_0','_1');
	
		var rePattern = new RegExp(sActiveMenu, "i");
		
		if(rePattern.test(oMenu.src)) {
		
			oMenu.src = oMenu.src_on;
		
		} else {
		
			oMenu.onmouseover = rollOver;
			oMenu.onmouseout = rollOut;
		}
	}
}