$(document).ready(function (){
    
    var onHover;
    $("#tabs a").bind("mouseenter", function(e){
    $("#primary-content").removeClass("bikeTab");
    $("#primary-content").removeClass(onHover);   
    onHover = this.id;
    $("#primary-content").addClass(onHover);
    //$("#primary-content").toggleClass("bikeTab");
    }); 
    
});