//GLOBAL COMMON SHARED FUNCTIONS

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
      window.onload = function() {
      oldonload();
      func();
    }
  }
}

function addClass(element,value)
{
    if (!element.className)
    {
        element.className = value;
    }
    else
    {
        newClassName = element.className;
        newClassName+= " ";
        newClassName+= value;
        element.className = newClassName;
    }
}

function replaceClass(element, what, to)
{
    if (!element.className)
    {
        return false;
    }
    else
    {
        element.className = element.className.replace(what, to);
    }
}