var sw=1;
image=new Array(2);
image[1]="/musicbar/musicman/img/takanaka/page1_img1.jpg";
image[2]="/musicbar/musicman/img/takanaka/page1_img2.jpg";
function picChg()
{
	setTimeout("picChg()",20000);
	var pic = document.getElementById('pic');
	pic.src=image[sw];
	sw=sw+1
	if (sw>2){sw=1;}
}