document.write ('<a class=\"nomk\" href=\"javascript:history.back()\"><img src=\"media/images/layout/bk1.gif\"' );
document.write (' onMouseOver=\"this.src=\'media/images/layout/bk1-f2.gif\';\"' );
document.write (' onMouseOut=\"this.src=\'media/images/layout/bk1.gif\';\"' );
document.write ('></a>' );