// JavaScript Document

function getElementsByClassName(class_name) {
  var obj, temp;
  var result=new Array();
  var c=0;
 
  if(document.all) {
   obj=document.all;
  }else if(document.getElementsByTagName && !document.all) {
    obj=document.getElementsByTagName("*");
  }
  for(i=0;i<obj.length;i++) {
    if(obj[i].className.indexOf(class_name)!=-1) {
      temp=","+obj[i].className.split(" ").join(",")+",";
      if(temp.indexOf(","+class_name+",")!=-1) {
        result[c]=obj[i];
        c++;
      }
    }
  }
  return result;
}

function isOpenNav(id){
    var obj = document.getElementById(id);
    if (obj.style.display == 'block')
        return true;
        
    return false;        
}

function toggleNav(id, opened){
    var temp=isOpenNav(id);
    
    /*for (var i=1; i<=5; i++) {
        if (opened > 0 && i != opened) {
            if (document.getElementById('subnav_'+i)) {
            document.getElementById('subnav_'+i).style.display='none';
            }
        }
    }*/
    if(id) {    
        my_id = id.split("_");
        if (my_id[1] > 0) {
            for(i=1;i<=5; i++) {
                if (i != my_id[1]) {
                    if (i != opened) {
                        mainnav = document.getElementById("mainnav_" + i).style.color = '#898989';
                    }
                } else {
                    mainnav = document.getElementById("mainnav_" + i).style.color = '#c40c29';
                }
            }
        }
        if(!temp) {
            document.getElementById(id).style.display='block';
        } else {
            document.getElementById(id).style.display='none';
        }
    }
}