var TABIDS = new Array('prof', 'bike', 'events', 'fimages');


function showtab($sid){
	for(var $i in TABIDS){
		var $id = TABIDS[$i];
		var $b = document.getElementById($id);
		var $a = document.getElementById('a_' + $id);
		if($id == $sid){
			$b.style.display = 'block';
			$a.className = 'tab_on';
		}else{
			$b.style.display = 'none';
			$a.className = 'tab_off';
		}
	}
}


if(document.getElementById) {
	showtab('prof');
}