if(document.images){

var membersBUT1 = new Image();
membersBUT1.src = "images/tour/page1/members.gif";
var membersBUT1_o = new Image();
membersBUT1_o.src = "images/tour/page1/members_o.gif";

var accessBUT1 = new Image();
accessBUT1.src = "images/tour/page1/access.gif";
var accessBUT1_o = new Image();
accessBUT1_o.src = "images/tour/page1/access_o.gif";

var tourBUT1 = new Image();
tourBUT1.src = "images/tour/page1/tour.gif";
var tourBUT1_o = new Image();
tourBUT1_o.src = "images/tour/page1/tour_o.gif";

var membersBUT11 = new Image();
membersBUT11.src = "../images/tour/page1/members.gif";
var membersBUT11_o = new Image();
membersBUT11_o.src = "../images/tour/page1/members_o.gif";

var accessBUT11 = new Image();
accessBUT11.src = "../images/tour/page1/access.gif";
var accessBUT11_o = new Image();
accessBUT11_o.src = "../images/tour/page1/access_o.gif";

var tourBUT11 = new Image();
tourBUT11.src = "../images/tour/page1/tour.gif";
var tourBUT11_o = new Image();
tourBUT11_o.src = "../images/tour/page1/tour_o.gif";

var backBUT2 = new Image();
backBUT2.src = "../images/tour/page2/back.jpg";
var backBUT2_o = new Image();
backBUT2_o.src = "../images/tour/page2/back_o.jpg";

var accessBUT2 = new Image();
accessBUT2.src = "../images/tour/page2/access.gif";
var accessBUT2_o = new Image();
accessBUT2_o.src = "../images/tour/page2/access_o.gif";

var tourBUT2 = new Image();
tourBUT2.src = "../images/tour/page2/tour.jpg";
var tourBUT2_o = new Image();
tourBUT2_o.src = "../images/tour/page2/tour_o.jpg";

var backBUT3 = new Image();
backBUT3.src = "../images/tour/page3/back.jpg";
var backBUT3_o = new Image();
backBUT3_o.src = "../images/tour/page3/back_o.jpg";

var accessBUT3 = new Image();
accessBUT3.src = "../images/tour/page3/access.jpg";
var accessBUT3_o = new Image();
accessBUT3_o.src = "../images/tour/page3/access_o.jpg";

var moreBUT3 = new Image();
moreBUT3.src = "../images/tour/page3/more.jpg";
var moreBUT3_o = new Image();
moreBUT3_o.src = "../images/tour/page3/more_o.jpg";

}

function imgOn(imgName){
	if(document.images){
	
		document[imgName].src = eval(imgName + "_o.src");

	}
}

function imgOff(imgName){
	if(document.images){
	
		document[imgName].src = eval(imgName + ".src");

	}
}