Event.observe(window, 'load', loadAccordions, false); 
    function loadAccordions() { 
        var acobj = new accordion('sidenavi'); 
        if(!isNaN(menuSelected)){
        	acobj.activate($$('.sidenavi .accordion_toggle')[menuSelected]); 
        }
} 

	function changeImage(obj){
		anc = document.getElementsByTagName('a');
		for(i=0;i<anc.length;i++){
			if(anc[i].className == 'on-mark') anc[i].className = 'off-mark';
		}
		obj.className = 'on-mark';
	}

	function mainImageChg(imageUrl){
		var target = $('mainImage');
		Element.setStyle(target, { background:"url("+imageUrl+") center no-repeat"});
	}