var delay = 5000;	//5•b
var frame = 0;
var timeout_id = null;

var banner = new Array();
var thelink = new Array();
banner[0]=new Image();banner[0].src="images/468x60_dl_polaris.gif";
thelink[0]="http://i-radio.moocs.com/polaris/"
banner[1]=new Image();banner[1].src="images/468x60_dl_kirinji.gif";
thelink[1]="http://i-radio.moocs.com/kirinji/"

function slide() {
	document.images["slide"].src = banner[frame].src;
	document.getElementById("thislink").href = thelink[frame];
	if (frame < banner.length-1) {
		frame++;
	} else {
		frame = 0;
	}
	timeout_id = setTimeout("slide()", delay);
}