查看更多和收起的js

<script> 
var serv1 = document.getElementById("job_intro_info");
var aBtn1 = document.getElementById("job_intro_btn");
    
var serv = document.getElementById("company_service");
var aBtn = document.getElementById("company_service_btn");

//var servH = serv.currentStyle.height;
//alert(servH);
  if(typeof
serv.currentStyle =='undefine') {//FF
 
var servH = serv.currentStyle['height'];
 //alert('ie:' + servH);
}else if(typeof
window.getComputedStyle!='undefine') {//IE
 
var servH = window.getComputedStyle(serv, null)['height'];
 //alert('firefox:' + servH);
}

function ckgd(serv,aBtn){
aBtn.οnclick=function(){
//var oH　=　serv.style.height;
//alert(servH);

if ( serv.style.height === "auto"){
 
serv.style.height = servH;
aBtn.className = "company_service_btn";
aBtn.innerHTML = "查看更多";
 
}else{
 
serv.style.height = "auto";
aBtn.className += " on";
aBtn.innerHTML = "收起";
}

}
  }
ckgd(serv,aBtn);
ckgd(serv1,aBtn1);
</script>