// JavaScript Document

var interval = 0;

function docId(id) { return document.getElementById(id); }
function docStyle(id) { return docId(id).style; }

var categories = [];
function toggleCategory(id) {
  if(categories.length == 0) {
    var divs = document.getElementsByTagName("div");
    for (i = 0; i < divs.length; i++)
      if (divs[i].className == "section2") categories.push(divs[i].id);
  }
  for (i = 0; i < categories.length; i++) {
    if (categories[i] != id) { 
      if (docStyle(categories[i] + "subcategory").display == "inline") {
        docStyle(categories[i]).background = "url(../img/btn_plus.gif) no-repeat";
        // docStyle(newscategories[i] + "link").color = "";
        docStyle(categories[i] + "subcategory").display = "none";
      }
    }  
  }
  if (docStyle(id + "subcategory").display != "inline") {
    docStyle(id + "subcategory").display = "inline";
    // docStyle(id + "link").color = "#0019a8";
    docStyle(id).background = "url(../img/btn_minus.gif) no-repeat";
  } else {
    docStyle(id + "subcategory").display = "none";
    // docStyle(id + "link").color = "";
    docStyle(id).background = "url(../img/btn_plus.gif) no-repeat";
  }
}