// 菜单
    function selectBar(n)
    {
        var linkButton = document.getElementById("link_button")
        var linkContext = document.getElementById("link_context");
    
        var linkBtns = linkButton.getElementsByTagName('div');
        var linkTxts = linkContext.getElementsByTagName('div');
    
        for(i=0;i<linkBtns.length;i++)
        {
            linkBtns[i].className="link_btn_normal";
        }
        linkBtns[n].className="link_btn_hover";
        for(i=0;i<linkTxts.length;i++)
        {
            linkTxts[i].style.display="none";
			switch(i) {
			  case 1 : linkTxts[i].style.padding="0 0 0 80px"; break;
			  case 2 : linkTxts[i].style.padding="0 0 0 160px"; break;
			  case 3 : linkTxts[i].style.padding="0 0 0 240px"; break;
			  case 4 : linkTxts[i].style.padding="0 0 0 320px"; break;
			  case 5 : linkTxts[i].style.padding="0 0 0 400px"; break;
			  case 6 : linkTxts[i].style.padding="0 0 0 480px"; break;
			  case 7 : linkTxts[i].style.padding="0 0 0 560px"; break;
			  case 8 : linkTxts[i].style.padding="0 0 0 640px"; break;
			  case 9 : linkTxts[i].style.padding="0 0 0 720px"; break;
			  case 10 : linkTxts[i].style.padding="0 0 0 800px"; break;
			}
        }
        linkTxts[n].style.display="block";
    }

// 企业文化
function selectQywh(n)
{
	var context = document.getElementById('qywhlist');
	var cards = context.getElementsByTagName('div');
	var contextpic = document.getElementById('qywhpic');
	var pics = contextpic.getElementsByTagName('img');

	for(i=0;i<cards.length;i++) { cards[i].style.display="none"; }
	cards[n].style.display="block";
	for(j=0;j<pics.length;j++) { pics[j].style.display="none"; }
	pics[n].style.display="block";
}

// 钢城风貌
function selectGcfm(n)
{
	var contextpic = document.getElementById('gcfmpic');
	var pics = contextpic.getElementsByTagName('img');

	for(j=0;j<pics.length;j++) { pics[j].style.display="none"; }
	pics[n].style.display="block";
}

// 环能生态
function selectHnst(n)
{
	var context = document.getElementById('hnstlist');
	var cards = context.getElementsByTagName('div');

	for(i=0;i<cards.length;i++) { cards[i].style.display="none"; }
	cards[n].style.display="block";
}

// 人文科技
function selectRwkj(n)
{
	var context = document.getElementById('rwkjlist');
	var cards = context.getElementsByTagName('div');

	for(i=0;i<cards.length;i++) { cards[i].style.display="none"; }
	cards[n].style.display="block";
}

// 公司优势
function selectGsys(n)
{
	var cards = document.getElementById('cards');
	var arrCard = cards.getElementsByTagName('div');
	var msgs = document.getElementById('msgs');
	var arrMsg = msgs.getElementsByTagName('div');
	
	for(i=0;i<arrCard.length;i++)
	{
		arrCard[i].className="card_b";
	}
	arrCard[n].className="card_a";
	for(i=0;i<arrMsg.length;i++)
	{
		arrMsg[i].style.display="none";
	}
	arrMsg[n].style.display="block";
}