Hi Hachim,
Try this way
1. I use the code below on my test site for the user to click on the link to open the chat window direclty
<a href="#" onclick="Chat_OpenContact('test')">test</a>
<a href="#" onclick="Chat_OpenContact('test2')">test2</a>
2. Open file "CuteSoft_Client\CuteChat\IntegrationUtility.js.aspx"
3. Find method below
function Chat_OpenContact(targetuserloginname)
4. In the method above should has a line
Chat_OpenMessengerDialog();
5. Change this line to
if(!GetCookie("CuteChatIMMainForm"))Chat_OpenMessengerDialog();
Regards,
Ken