To create a link to open BigRadar Messenger, you can simple put the following code in your hyperlink <a href="somelink.html"> </a>
onclick="BigRadar.open();"Example code:<a href="yourwebsite.com" onclick="BigRadar.open();"> Visit my Website</a>
onclick="BigRadar.close();"Example code:<a href="yourwebsite.com" onclick="BigRadar.close();"> Visit my Website</a>