isamap = new Object();
isamap[0] = "_df"
isamap[1] = "_ov"
isamap[2] = "_ot"
isamap[3] = "_dn"

function isimgact(id, act)
{
	if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) { // ensure browser can do JavaScript rollovers.
isimages = new Object();
isimages.m1_df = new Image();
isimages.m1_df.src = "image/b01.gif";
isimages.m1_ov = new Image();
isimages.m1_ov.src = "image/c01.gif";
isimages.m1_ot = new Image();
isimages.m1_ot.src = "image/b01.gif";
isimages.m2_df = new Image();
isimages.m2_df.src = "image/b02.gif";
isimages.m2_ov = new Image();
isimages.m2_ov.src = "image/c02.gif";
isimages.m2_ot = new Image();
isimages.m2_ot.src = "image/b02.gif";
isimages.m3_df = new Image();
isimages.m3_df.src = "image/b03.gif";
isimages.m3_ov = new Image();
isimages.m3_ov.src = "image/c03.gif";
isimages.m3_ot = new Image();
isimages.m3_ot.src = "image/b03.gif";
isimages.m4_df = new Image();
isimages.m4_df.src = "image/b04.gif";
isimages.m4_ov = new Image();
isimages.m4_ov.src = "image/c04.gif";
isimages.m4_ot = new Image();
isimages.m4_ot.src = "image/b04.gif";
isimages.m5_df = new Image();
isimages.m5_df.src = "image/b05.gif";
isimages.m5_ov = new Image();
isimages.m5_ov.src = "image/c05.gif";
isimages.m5_ot = new Image();
isimages.m5_ot.src = "image/b05.gif";
isimages.m6_df = new Image();
isimages.m6_df.src = "image/b06.gif";
isimages.m6_ov = new Image();
isimages.m6_ov.src = "image/c06.gif";
isimages.m6_ot = new Image();
isimages.m6_ot.src = "image/b06.gif";
isimages.m7_df = new Image();
isimages.m7_df.src = "image/b07.gif";
isimages.m7_ov = new Image();
isimages.m7_ov.src = "image/c07.gif";
isimages.m7_ot = new Image();
isimages.m7_ot.src = "image/b07.gif";
}