After you have typed your entry and inserted your images, click Edit HTML. Then follow these steps in the image below (please click on it to enlarge!) :
Q: Why do it?
A: So that when you click on the image/link, it will be open automatically in new window/tab. This will ensure smooth surfing while maintaining the current page of the site.
Actually there's more to it. CoLT is a multi function copy paste add on for Firefox that will do :
Copy text of the hyperlink.
Copy text and hyperlink at the same time.
Copy page title and its url at the same time.
Customize your own copy paste options.
No need to highlight the hyperlink's text and copy. Just right click on the hyperlink and choose any of the copy format. To copy the page title, just right click on the page and choose "Copy Page Title and Location As". You can also customize your copy format at the add on options. A Very useful must have tool for blogs! Here's the link.