window.onload=function (){ 
tab(1);
mail_tab(1);
}

function tab(a)
{
	if(a==1)
	{
		document.getElementById("tab1").className="index_news1";
		document.getElementById("tab2").className="index_news2";
		document.getElementById("tab3").className="index_news2";
		document.getElementById("hssp").style.display="";
		document.getElementById("hsgj").style.display = "none";
		document.getElementById("mtky").style.display = "none";
	}
	else if(a==2)
	{
		document.getElementById("tab1").className="index_news2";
		document.getElementById("tab2").className="index_news1";
		document.getElementById("tab3").className="index_news2";
		document.getElementById("hssp").style.display="none";
		document.getElementById("hsgj").style.display = "";
		document.getElementById("mtky").style.display = "none";
	}
	else
	{
		document.getElementById("tab1").className="index_news2";
		document.getElementById("tab2").className="index_news2";
		document.getElementById("tab3").className="index_news1";
		document.getElementById("hssp").style.display="none";
		document.getElementById("hsgj").style.display = "none";
		document.getElementById("mtky").style.display = "";
	}
}

function mail_tab(a)
{
	if(a==1)
	{
		document.getElementById("tab4").className="index_email1";
		document.getElementById("tab5").className="index_email2";
		document.getElementById("coremail").style.display="";
		document.getElementById("eyou").style.display = "none";
	}
	else
	{
		document.getElementById("tab4").className="index_email2";
		document.getElementById("tab5").className="index_email1";
		document.getElementById("coremail").style.display="none";
		document.getElementById("eyou").style.display = "";
	}
}