// JavaScript Document
function focusText(obj,str1){
	//搜索框中的文字
	if (obj.value==str1) {
	  obj.value="";
	}
	obj.style.color="#000";
}
function blurText(obj,str1){
	if (obj.value=="") {
	  obj.value=str1;
	}
	obj.style.color="#DDD";
}

function imgZoom(obj,w,h){
	//图片自动缩放
	var i_w=obj.width;
	var i_h=obj.height;
	var i_t=0;  //顶部距离
	if (i_w>0 && i_h>0){ 
	  if ((1.0*i_h/h) > (1.0*i_w/w)){
		  i_w=1.0*i_w/(1.0*i_h/h);
		  i_h=h;
	  }
	  else {
		  i_h=1.0*i_h/(1.0*i_w/w);
		  i_w=w;	
		  obj.style.marginTop=(h-i_h)/2 + "px";
	  }
	  obj.width=i_w;
	  obj.height=i_h;
	}
}

function setLeft(objName){
	//下拉菜单的左边位置
	document.getElementById(objName).style.left =0-(document.getElementById(objName).offsetParent.offsetLeft) + "px";
}

//向左滚动代码
function moveLeft(demo,demo1,demo2){
  var speed=30
  var demo=document.getElementById(demo);
  var demo1=document.getElementById(demo1);
  var demo2=document.getElementById(demo2);
  
  demo2.innerHTML=demo1.innerHTML
  function Marquee(){
  if(demo2.offsetWidth-demo.scrollLeft<=0)
  demo.scrollLeft-=demo1.offsetWidth
  else{
  demo.scrollLeft++
  }
  }
  var MyMar=setInterval(Marquee,speed)
  demo.onmouseover=function() {clearInterval(MyMar)}
  demo.onmouseout=function() {MyMar=setInterval(Marquee,speed)}
}

function showOrHide(str1,num1){
	if (document.getElementById(str1+num1).style.display=="none") {
		document.getElementById(str1+num1).style.display="";
	}
	else {
		document.getElementById(str1+num1).style.display="none";
	}
}

function showIndexAbout(strName1,strName2,intIndex,intCount){
//tab切换
	for (var i=1; i<=intCount; i++){
		document.getElementById(strName2+i).style.display="none";
		document.getElementById(strName1+i).className="i_main1_l2_t_out i_main1_l2_t_t";
	}
	document.getElementById(strName2+intIndex).style.display="block";
	document.getElementById(strName1+intIndex).className="i_main1_l2_t_over i_main1_l2_t_t";
}