<!--
	function show_tab(num){
		document.getElementById('tab'+num.toString()).className = 'current';
		for(var i=0;i<4;i++){
			if(i==num){
				document.getElementById("tab_"+i.toString()).style.display = 'block';
			}else{
				document.getElementById("tab_"+i.toString()).style.display = 'none';
				document.getElementById('tab'+i.toString()).className = '';
			}
		}
	}
//-->