//封装getEelementById函数
function $()
{
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);

    if (arguments.length == 1) 
      return element;

    elements.push(element);
  }

  return elements;
}


var MouseDelayTime=150;//鼠标感应延迟300毫秒
function setTab(name,cursel,n)
{
	for(i=1;i<=n;i++)
	{ 
		var menu = $(name+i);  //菜单
		var con  = $("con_"+name+i);//内容
		
		menu.className=i==cursel?"current":""; 
		con.style.display=i==cursel?"block":"none";		
	}
	
	setTimeout('setTab()',MouseDelayTime);
}