function changeTab(b,e,d){
for(var c=0;c<d;c++){
if(document.getElementById(b+"_content_"+c)){
   document.getElementById(b+"_content_"+c).style.display="none"
   }
if(document.getElementById(b+"_img_"+c)){
    document.getElementById(b+"_img_"+c).style.display="none"
   }
if(document.getElementById(b+"_"+c)){
var a=document.getElementById(b+"_"+c).className;
if(a.indexOf("H")!=-1){a=a.substring(0,a.length-1)}
document.getElementById(b+"_"+c).className=a}}
if(document.getElementById(b+"_img_"+e)){
	document.getElementById(b+"_img_"+e).style.display="block"
    }if(document.getElementById(b+"_content_"+e)){
		document.getElementById(b+"_content_"+e).style.display="block"
	}if(document.getElementById(b+"_"+e)){
		document.getElementById(b+"_"+e).className=document.getElementById(b+"_"+e).className+"H"
}
}