// preloader
		var img=new Array();
		img[0]=new Image(); img[0].src="images/pic.jpg";
		img[1]=new Image(); img[1].src="images/pic1.jpg";
		img[2]=new Image(); img[2].src="images/pic2.jpg";
		img[3]=new Image(); img[3].src="images/pic3.jpg";
		img[4]=new Image(); img[4].src="images/pic4.jpg";
		var interval=2000;
		var n=0;
		var imgs = new Array("images/pic.jpg","images/pic1.jpg","images/pic2.jpg","images/pic3.jpg","images/pic4.jpg");