Copy and paste this code into your website.
<a href="http://www.gpshoresmi.gov/Login?returnurl=%2flogin.aspx%3fReturnUrl%3d%252Flogin.aspx%253FReturnUrl%253D%25252FCalendar%25252FTabId%25252F6009%25252FPgrID%25252F15914%25252FPageID%25252F4%25252FDefault.aspx">Your Link Name</a>