var cName=function(div,cc){
var ele=document.getElementsByTagName(div);
var res= new Array(),reslist="-1";
for(i=0;i<ele.length;i++){
if(ele[i].className==cc){
reslist+=","+i;
}
}
reslist=reslist.replace(new RegExp("-1,"),"");
for(j=0;j<reslist.split(",").length;j++){
res[j]=ele[reslist.split(",")[j]];
}
return res;
}
var c=cName("div","hello");
alert(c.innerHTML);