var DHTML = (document.getElementById || document.all || document.layers);

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 invi(flag)
{
	if (!DHTML) return;
	var x = new getObj('text');
	x.style.visibility = (flag) ? 'hidden' : 'visible'
}

var texttop = 400;

function move(amount)
{
	if (!DHTML) return;
	var x = new getObj('text');
	texttop += amount;
	x.style.top = texttop;
}


function changeCol(col)
{
	if (!DHTML) return;
	var x = new getObj('middleContent');
	x.style.color = col;
}

function changeBG(bg)
{
	if (!DHTML) return;
	var x = new getObj('middleContent');
	x.style.background = bg;

}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(bg) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function eraseCookie(name) {
	createCookie(name,"",-1);
}