// JavaScript Document
function onchang(num)
{
	for(var i=1;i<=5;i++)
	{
		if(i==num){
			document.getElementById('tab'+i).className = "select";
			document.getElementById('con'+i).style.display = "block";
		}else{
			document.getElementById('tab'+i).className = "";
			document.getElementById('con'+i).style.display = "none";
		}
	}
}