var num = 1
img0 = new Image ()
img0.src = "images/logo01.jpg"
img1 = new Image ()
img1.src = "images/logo02.jpg"
img2 = new Image ()
img2.src = "images/logo03.jpg"
img3 = new Image ()
img3.src = "images/logo04.jpg"
img4 = new Image ()
img4.src = "images/logo05.jpg"
   
function flip()
{
	num = num+1;
	if ( num >= 5 )
		num = 1;
	document.logoimg.src=eval("img"+num+".src");
}   
function flop()
{
	document.logoimg.src=eval("img0.src");
}