Can i get html codes for this forum from Flickr and if so how
I'm not sure what you're asking exactly.. Do you mean that you don't want to invest the effort in clicking on the image button, or do you mean that you don't know how to put pictures from Flickr onto this forum?
Option 1: In Flickr, click on the all sizes icon for a picture of interest. Select the size you want, copy the URL out of the "Grab the photo's URL" box. Click on the image insert icon on MR (yellow "picture" with mountains and the sun) and paste it in the pop-up.
Option 2: You can take that URL and make the image tags yourself: [ IMG ] the URL [ / URL ] (take out the spaces).
If you want Flickr to show you a tag box that has the image URL inside the IMG tags, *shrug* I'm not sure how to do that.