var x = Math.floor(Math.random() * 4);
	if (x == 0) {
		document.write("<IMG SRC='home_files/r1.gif'>");
	} else if (x == 1) {
		document.write("<IMG SRC='home_files/r2.gif'>");
	} else if (x == 2) {
		document.write("<IMG SRC='home_files/r3.gif'>");
	} else if (x == 3) {
		document.write("<IMG SRC='home_files/r4.gif'>");
	}