function render_tab(name,eid) {
    var tabs = new Array('overview','daily','study','accomodations','trip','expect','guides')

    for(var i = 0; i < tabs.length; i++) {
	if(tabs[i].indexOf(name) == 0) {
	    RollOver(name);
	} else {
	    RollOut(tabs[i]);
	}
    }

    new Ajax.Updater('tab_content_'+eid, '/expeditions/'+name, {
	method: 'get', parameters: "eid="+eid
    });
}