function summIdbyName(tag,name)
{
    var num = 0;
//    var objs = document.getElementsByName(name);
    var objs = getElementsByName_iefix(tag, name);
    var i = 0;
    
    while (i < objs.length ) 
    {
        num += parseInt(objs[i].id);
        i++;
    }   
  return num;
  
}

function getElementsByName_iefix(tag, name) 
{
     
     var elem = document.getElementsByTagName(tag);
     var arr = new Array();
     for(i = 0,iarr = 0; i < elem.length; i++) {
          att = elem[i].getAttribute("name");
          if(att == name) {
               arr[iarr] = elem[i];
               iarr++;
          }
     }
     return arr;
};