Hidden Tooltips
If you find that the popup summary tooltip on the JEvents Calendar appears underneath other elements on your page or doesn't appear at all then you need to apply a simple CSS tweak.
1. Make sure you are using the joomla style tooltip in the JEvents config (monthly calendar tab).
2. Add this CSS to your template.css file (or other css file that is loaded on your site):
.jevtip-tip {z-index:999;}
Transparent Tooltips
If the background color of your tooltip is transparent then add this CSS to your template css file:
.jevtip-tip {background-color:#fff;}
Bad Font Sized in Tooltips
If your tooltip font is too big or too small then you will need to inspect the CSS that is causing this using the Firebug addon for Firefox of the Chrome Inspector. As a club member if you give us the URL in a club forum post then we can take a look for you and quickly advise what the best fix is.