loader = new Image(); 
loader.src = "../_img/main_loader.gif";

function navLink(pagelink, parameters) {
	var pageReturn = 'contentPage';
	var pageParent = pageReturn + 'Parent';
	$(pageReturn).innerHTML = '<img src="./_img/main_loader.gif" align="left" /><span style="color: #68708b; font-weight: bold;">&nbsp;&nbsp;Loading...</span>';
	pagelink = 'content/' + pagelink + '.php';
	var myAjax = new Ajax.Updater(
			{ success: pageReturn },
			pagelink,
			{
				method: 'get',
				parameters: parameters,
				/* onFailure: reportError */
				onSuccess: function () {
						$(pageParent).style.display = 'none';
						new Effect.Appear(pageParent);
					}
			}
	);
}