//tabtop 为选项卡菜单元素前缀名,tabtop + i
//tabcon 为选项卡内容元素前缀名,tabtop + i
//opencssname,closecssname 分别为选项卡菜单元素的css类名称;可为""或null
function gotab(sindex,tabtop,tabcon,opencssname,closecssname)
{
	for(var i=1;i<10;i++)
	{
		var di = document.getElementById(tabcon+i);
		var stab = document.getElementById(tabtop+i);
		if(di)
		{
			if(sindex == i)
			{
				di.style.display = "block";
				if (typeof(opencssname) == "string" && opencssname !="")
				{ stab.className = opencssname; }
			}
			else
			{
				di.style.display = "none";
				if (typeof(closecssname) == "string" && closecssname !="")
				{ stab.className = closecssname; }
			}
		}
	}
}