function select_nav_item(obj) {
	obj.style.fontWeight='bold';
    obj.style.letterSpacing="-1px";
	//var div = obj.childNodes[0];
	var array=obj.childNodes;
	
	var i = 0;
	while(array[i].nodeName != 'IMG') {
		i++;
	}
	if(array[i].className.indexOf("_selected") == -1) {
		array[i].style.visibility='visible';
	}
}

function unselect_nav_item(obj) {
	obj.style.fontWeight = 'normal';
    obj.style.letterSpacing="0";
	//var div = obj.childNodes[0];
	var array=obj.childNodes;
	var i = 0;
	while(array[i].nodeName != 'IMG') {
		i++;
	}
	if(array[i].className.indexOf("_selected") == -1) {
		array[i].style.visibility='hidden';
	}
}

function select_nav_item_nodiv(obj) {
	obj.style.fontWeight='bold';
    obj.style.letterSpacing="-1px";
	var array=obj.childNodes;
	var i = 0;
	while(array[i].nodeName != 'IMG') {
		i++;
	}
	if(array[i].className.indexOf("_selected") == -1) {
		array[i].style.visibility='visible';
	}
}

function unselect_nav_item_nodiv(obj) {
	obj.style.fontWeight = 'normal';
    obj.style.letterSpacing="0";
	var array=obj.childNodes;
	var i = 0;
	while(array[i].nodeName != 'IMG') {
		i++;
	}
	if(array[i].className.indexOf("_selected") == -1) {
		array[i].style.visibility='hidden';
	}
}