function showhide(layerID, mode) {
	var currentRefstyle = document.getElementById(layerID).style;
	var currentRefheight = document.getElementById(layerID).offsetHeight;
	//Display modes 1 for on 0 for off
	modes = new Array
	modes[0] = 'none'
	modes[1] = 'block'
	if(isNaN(mode)) {
		if (layerID == 'galleries_bckg') {
			var body = document.body, html = document.documentElement;
			var htmlHeight = Math.max( body.scrollHeight, body.offsetHeight, html.clientHeight, html.scrollHeight, html.offsetHeight );
			currentRefstyle.height = (htmlHeight) + 'px';
		}
		currentRefstyle.display = (currentRefstyle.display == 'none') ? 'block' : 'none';
	} else {
		currentRefstyle.display = modes[mode];
	}
}