function showFeatureDetail(feature, intro)
{
 document.getElementById('title' + feature).className = 'shrink';
 
 if (document.getElementById('content' + feature).className == 'hidden') {document.getElementById('content' + feature).className = 'visible';}
 else {document.getElementById('content' + feature).className = 'hidden';}
 
 /*if (intro) { document.getElementById('intro' + feature).className = 'hidden'; }
 document.getElementById('content' + feature).className = 'visible';*/
}

function hideFeatureDetail(feature, intro)
{
 document.getElementById('title' + feature).className = 'expand';
 if (intro) { document.getElementById('intro' + feature).className = 'visible'; }
 document.getElementById('content' + feature).className = 'hidden';
}