Array.prototype.in_array = function ( obj ) {
	var len = this.length;
	for ( var x = 0 ; x <= len ; x++ ) {
		if ( this[x] == obj ) return true;
	}
	return false;
}

function getObj(name)
{
  if (document.getElementById)
    {this.obj = document.getElementById(name);
    this.style = document.getElementById(name).style;}
  else if (document.all)
    {this.obj = document.all[name];
    this.style = document.all[name].style;}
  else if (document.layers)
    {this.obj = document.layers[name];
    this.style = document.layers[name];}
}

function hidestyle(whichid)
{
  mainobject = new getObj(whichid);
  if (mainobject.style.display=='none')
    {mainobject.style.display='normal';}
  else
    {mainobject.style.display='none';}
}
function hidestyleON(whichid)
{
  mainobject = new getObj(whichid);
  mainobject.style.display='none';
}

function hidestyleOFF(whichid)
{
  mainobject = new getObj(whichid);
  mainobject.style.display='';
}