a.image { /* definition of the "image" class in the <a> tag */
     display: block; /* a tag must be a block */
     width: 125px; /* width of reactive image */
     height: 35px; /* height of reactive image */
     background-image: url(../images/myIcons/GO2.gif); /* source for start image */
     background-repeat: no-repeat;
     }
	 
a.image:hover { /* definition of the "image" class for <a> tag when hovered onto */
     background-image: url(../images/myIcons/GO.gif); /* source for target image */
     }