Copy and paste this code into your website.
<a href="http://www.gpshoresmi.gov/Default.aspx?tabid=5942&ctl=Login&returnurl=/Default.aspx?tabid=5942&ctl=Login&returnurl=%2Flogin.aspx%3FReturnUrl%3D%252Flogin.aspx%253FReturnUrl%253D%25252Flogin.aspx%25253FReturnUrl%25253D%2525252FCalendar%2525252Ftabid%2525252F6009%2525252FModuleID%2525252F8923%2525252FItemID%2525252F16352%2525252Fmctl%2525252FEventDetails%2525252FDefault.aspx">Your Link Name</a>