// colTopMain:  Define the image attributes
var imgMain = {
  src: 'http://newmedia.innovationutah.com/wp-content/uploads/2011/03/BiG_video634x249.png',
  alt: 'New BioInnovations Gateway Video',
  width: 634,
  height: 249,
  link: 'http://www.youtube.com/watch?v=GbWok0tSGR4&feature=player_detailpage'
};

// Write image to document
document.write(''+
'<a class="blogHomeLink" href="'+imgMain.link+'"><img src="'+imgMain.src+'" alt="'+imgMain.alt+'" title="'+imgMain.alt+'" width="'+imgMain.width+'" height="'+imgMain.height+'" /></a>');