function change() {
	if (i==0) {
		document.body.style.background = "url(bg04.jpg) no-repeat right top";
		}
	if (i==1) {
		document.body.style.background = "url(bg01.jpg) no-repeat right bottom";
		}
	if (i==2) {
		document.body.style.background = "url(bg03.jpg) no-repeat left top";
		
		}
	if (i==3) {
		document.body.style.background = "url(bg05.jpg) no-repeat right bottom";
		
		}
	if (i==4) {
		document.body.style.background = "url(bg09.jpg) no-repeat right bottom";
		}
	if (i==5) {
		document.body.style.background = "url(bg07.jpg) no-repeat left top";
		}
	if (i==6) {
		document.body.style.background = "url(bg08.jpg) no-repeat center top";
		}
	if (i==7) {
		document.body.style.background = "url(bg06.jpg) no-repeat left bottom";
i=-1;
		}
i = i+1;
}