//将环保局网站设为首页
function dohome(){
	this.home.style.behavior='url(#default#homepage)';this.home.setHomePage('http://www.szepb.gov.cn');
}


function selectobj(obj,CityN,LayerID){
	document.getElementById(obj).value=CityN;
	document.getElementById(obj).className='InputStyle';
	if(LayerID!="")
	   document.getElementById(LayerID).style.display='none';
}

function DPBlock(a){
	document.getElementById(a).style.display='block';
}

function DPNone(a){
	document.getElementById(a).style.display='none';
}




//设置标签切换

 function setTab(strNewsTitle,strNewsContent,strTag)
 {
	var Tags=document.getElementById(strNewsTitle).getElementsByTagName(strTag); 
	var TagsCnt=document.getElementById(strNewsContent).getElementsByTagName('span'); 
	var len=Tags.length; 
	var flag=0;//修改默认值
	for(i=0;i<len;i++){
		Tags[i].value = i;
		Tags[i].onmouseover=function(){changeNav(this.value)}; 
		TagsCnt[i].className='undis';					
	}
		Tags[flag].className='topC1';
		TagsCnt[flag].className='dis';
	function changeNav(v){	
		Tags[flag].className='topC0';
		TagsCnt[flag].className='undis';
		flag=v;	
		Tags[v].className='topC1';
		TagsCnt[v].className='dis';
	}
}


//table切换 点击
 function setTabClick(strNewsTitle,strNewsContent,strTag)
 {
	var Tags=document.getElementById(strNewsTitle).getElementsByTagName(strTag); 
	var TagsCnt=document.getElementById(strNewsContent).getElementsByTagName('span'); 
	var len=Tags.length; 
	var flag=0;//修改默认值
	for(i=0;i<len;i++){
		Tags[i].value = i;
		Tags[i].onclick=function(){changeNav(this.value)}; 
		TagsCnt[i].className='undis';					
	}
		Tags[flag].className='topC1';
		TagsCnt[flag].className='dis';
	function changeNav(v){	
		Tags[flag].className='topC0';
		TagsCnt[flag].className='undis';
		flag=v;	
		Tags[v].className='topC1';
		TagsCnt[v].className='dis';
	}
}

//table切换 点击
 function setTabClick2(strNewsTitle,strNewsContent,strTag)
 {
	var Tags=document.getElementById(strNewsTitle).getElementsByTagName(strTag); 
	var TagsCnt=document.getElementById(strNewsContent).getElementsByTagName('dd'); 
	var len=Tags.length; 
	var flag=0;//修改默认值
	for(i=0;i<len;i++){
		Tags[i].value = i;
		Tags[i].onclick=function(){changeNav(this.value)}; 
		TagsCnt[i].className='undis';					
	}
		Tags[flag].className='topC1';
		TagsCnt[flag].className='dis';
	function changeNav(v){	
		Tags[flag].className='topC0';
		TagsCnt[flag].className='undis';
		flag=v;	
		Tags[v].className='topC1';
		TagsCnt[v].className='dis';
	}
}


//设置字体大小
function setFont(x)
{
  switch (x){
    case 1:
		document.getElementById("endtext").className="endbig";		
		document.getElementById("e_b").className="sel";
		document.getElementById("e_n").className="unsel";
		document.getElementById("e_s").className="unsel";
	break;
	case 2:
		document.getElementById("endtext").className="endnomal";
		document.getElementById("e_n").className="sel";
		document.getElementById("e_b").className="unsel";
		document.getElementById("e_s").className="unsel";
	break;
	case 3:
		document.getElementById("endtext").className="endsmall";
		document.getElementById("e_s").className="sel";
		document.getElementById("e_n").className="unsel";
		document.getElementById("e_b").className="unsel";
      break;
	}
} 


//弹出二级菜单

var DDSPEED = 10;
var DDTIMER = 15;
var OFFSET = -2;
var ZINT = 100;

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);
    c.style.display = 'block';
    if(c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!c.maxh){
      c.style.left = (h.offsetWidth + OFFSET) + 'px';
      c.style.height = 'auto';
      c.maxh = c.offsetHeight;
      c.style.height = '0px';
    }
    ZINT = ZINT + 1;
    c.style.zIndex = ZINT;
    c.timer = setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    h.timer = setTimeout(function(){ddCollapse(c)},50);
  }
}

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

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);
  }
}

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 > (c.maxh - 2) && d == 1){
    clearInterval(c.timer);
  }else if(dist < 1 && d != 1){
    clearInterval(c.timer);
    c.style.display = 'none';
  }
}