myPics1 = new Array("images/mainimg_chamber.jpg","images/mainimg_office3.jpg","images/mainimg_chamber2.jpg","images/mainimg_chamber3.jpg","images/mainimg_office.jpg", "images/mainimg_office2.jpg","images/mainimg_chamber4.jpg");

imgCt1 = myPics1.length;

function choosePic(){
	if(document.images){
	randomNum1 = Math.floor((Math.random() * imgCt1));
	document.sidebar1.src = myPics1[randomNum1];
	
	}
}