// JavaScript Document
function g(o){return document.getElementById(o);}
//行情
function HoverLi(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=3;i++)
{
	g('kb_'+i).className='normaltab1';
	g('kb_0'+i).className='undis1';
}
	g('kb_0'+n).className='dis1';
	g('kb_'+n).className='hovertab1';
}
//市场公告
function HoverLiscgg(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=2;i++)
{
	g('tb1_'+i).className='normaltab';
	g('tb1_0'+i).className='undis';
}
	g('tb1_0'+n).className='dis';
	g('tb1_'+n).className='hovertab';
}
//行业动态
function HoverLihanye(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=3;i++)
{
	g('tb2_'+i).className='normaltab';
	g('tb2_0'+i).className='undis';
}
	g('tb2_0'+n).className='dis';
	g('tb2_'+n).className='hovertab';
}
//行业动态
function HoverLihydt(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=2;i++)
{
	g('tb3_'+i).className='normaltab';
	g('tb3_0'+i).className='undis';
}
	g('tb3_0'+n).className='dis';
	g('tb3_'+n).className='hovertab';
}
//粮食信息
function HoverLigongqiu(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=5;i++)
{
	g('tb5_'+i).className='normaltab';
	g('tb5_0'+i).className='undis';
}
	g('tb5_0'+n).className='dis';
	g('tb5_'+n).className='hovertab';
}
//供求信息
function HoverLiqytj(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=2;i++)
{
	g('tb4_'+i).className='normaltab';
	g('tb4_0'+i).className='undis';
}
	g('tb4_0'+n).className='dis';
	g('tb4_'+n).className='hovertab';
}
/*财经信息*/
function HoverLiwsdc(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=3;i++)
{
	g('tb6_'+i).className='normaltab';
	g('tb6_0'+i).className='undis';
}
	g('tb6_0'+n).className='dis';
	g('tb6_'+n).className='hovertab';
}
/*进出口信息*/
function HoverLijck(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=3;i++)
{
	g('tb8_'+i).className='normaltab';
	g('tb8_0'+i).className='undis';
}
	g('tb8_0'+n).className='dis';
	g('tb8_'+n).className='hovertab';
}
/*原油外汇*/
function HoverLikc(n){
//如果有N个标签,就将i<=N;
//本功能非常OK,兼容IE7,FF,IE6
for(var i=1;i<=2;i++)
{
	g('tb9_'+i).className='normaltab';
	g('tb9_0'+i).className='undis';
}
	g('tb9_0'+n).className='dis';
	g('tb9_'+n).className='hovertab';
}
//如果要做成点击后再转到请将<li>中的onmouseover 改成 onclick;
//]]>

var DDSPEED = 10;
var DDTIMER = 15;
// main function to handle the mouse events //
function ddMenu(id,d){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearInterval(c.timer);
  if(d == 1){
    clearTimeout(h.timer);
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.display = 'block';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

// collapse the menu //
function ddCollapse(c){
  c.timer = setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

// cancel the collapse if a user rolls over the dropdown //
function cancelHide(id){
  var h = document.getElementById(id + '-ddheader');
  var c = document.getElementById(id + '-ddcontent');
  clearTimeout(h.timer);
  clearInterval(c.timer);
  if(c.offsetHeight < c.maxh){
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

// incrementally expand/contract the dropdown and change the opacity //
function ddSlide(c,d){
  var currh = c.offsetHeight;
  var dist;
  if(d == 1){
    dist = (Math.round((c.maxh - currh) / DDSPEED));
  }else{
    dist = (Math.round(currh / DDSPEED));
  }
  if(dist <= 1 && d == 1){
    dist = 1;
  }
  c.style.height = currh + (dist * d) + 'px';
  c.style.opacity = currh / c.maxh;
  c.style.filter = 'alpha(opacity=' + (currh * 100 / c.maxh) + ')';
  if((currh < 2 && d != 1) || (currh > (c.maxh - 2) && d == 1)){
    clearInterval(c.timer);
  }
}