var currtab=1;
function showTab(val,num){
	var elm = document.getElementById('tabs');
	elm.className = val;
	if(num){
		var oldtab = document.getElementById('tabinfo'+currtab);
		oldtab.style.display="none";
		var tab = document.getElementById('tabinfo'+num);
		tab.style.display="block";
		currtab = num;
	}
}