isamap = new Object () ;
isamap[0] = "_df"
isamap[1] = "_ov"
function isimgact(id, act)
{if(document.images) document.images[id].src = 
eval( "isimages." + id + isamap[act] + ".src");}
if (document.images) {
	isimages = new Object();
	
	isimages.M1_df = new Image();
	isimages.M1_df.src = "images/m1.jpg";
	isimages.M1_ov = new Image();
	isimages.M1_ov.src = "images/m1-1.jpg";
	isimages.M2_df = new Image();
	isimages.M2_df.src = "images/m2.jpg";
	isimages.M2_ov = new Image();
	isimages.M2_ov.src = "images/m2-1.jpg";
	isimages.M3_df = new Image();
	isimages.M3_df.src = "images/m3.jpg";
	isimages.M3_ov = new Image();
	isimages.M3_ov.src = "images/m3-1.jpg";
	isimages.M4_df = new Image();
	isimages.M4_df.src = "images/m4.jpg";
	isimages.M4_ov = new Image();
	isimages.M4_ov.src = "images/m4-1.jpg";
	}