function brCheck(myId){
	if (window.opera) myBr = document.getElementById(myId).style;
	else if (document.getElementById) myBr = document.getElementById(myId).style;
	else if (document.all) myBr = document.all[myId].style;
	else if (document.layers) myBr = document[myId];
	return myBr;
}
function menuClose(){
	mySetCookie("Visibility","off",1);
	brCheck("menuBar").visibility = "hidden";
	brCheck("body").backgroundImage = "url('" +img1.src+ "')"
}
function menuOpen(){
	mySetCookie("Visibility","on",1);
	brCheck("menuBar").visibility = "visible";
	brCheck("body").backgroundImage = "url('" +img2.src+ "')";
}
function checkCookie(){
	if (myGetCookie("Visibility")=="on") {
		brCheck("menuBar").visibility = "visible";
		brCheck("body").backgroundImage = "url('" +img2.src+ "')"
	}
}

function mySetCookie(myCookie,myValue,myDay){
   myExp = new Date();
   myExp.setTime(myExp.getTime()+(myDay*24*60*60*1000));
   myItem = "@" + myCookie + "=" + escape(myValue) + ";";
   myExpires = "expires="+myExp.toGMTString();
   document.cookie =  myItem + myExpires;
}
function myGetCookie(myCookie){
   myCookie = "@" + myCookie + "=";
   myValue = null;
   myStr = document.cookie + ";" ;
   myOfst = myStr.indexOf(myCookie);
   if (myOfst != -1){
      myStart = myOfst + myCookie.length;
      myEnd   = myStr.indexOf(";" , myStart);
      myValue = unescape(myStr.substring(myStart,myEnd));
   }
   return myValue;
}