a=new Image(52,18);a.src="../images/navi01b.gif";
a2=new Image(52,18);a2.src="../images/navi01a.gif";
b=new Image(126,18);b.src="../images/navi02b.gif";
b2=new Image(126,18);b2.src="../images/navi02a.gif";
c=new Image(58,18);c.src="../images/navi03b.gif";
c2=new Image(58,18);c2.src="../images/navi03a.gif";
d=new Image(106,18);d.src="../images/navi04b.gif";
d2=new Image(106,18);d2.src="../images/navi04a.gif";
e=new Image(80,18);e.src="../images/navi05b.gif";
e2=new Image(80,18);e2.src="../images/navi05a.gif";