/* displayHousing(id) displays sets the id_content div's z-index to 1, and all other id's _content
 *div's z-index to 0;
 */
function displayHousing(id){
    for(var element in $('#housing_navigation').children()){
        if(id == element.getAttribute('id')){
            $('#' + id + '_content').css('z-index', 1);
        }else{
            $('#' + id + '_content').css('z-index', 0);
        }
    }
}