function goToTab (tabid) {
	/* disable tabs */
	var table = document.getElementById("blurbs");
	var tabs = table.getElementsByTagName("a");
	for (var i=0; i<tabs.length; i++) {
		tabs[i].className = 'blurb_tab';
	}
	
	/* find tab to enable */
	var tab = document.getElementById("blurb_"+tabid);
	tab.className = 'blurb_tab on';
	
	new Ajax.Updater('blurb','/in/blurb.php?id='+tabid);
}