Are you using IE7? I am looking the javascript for opening window targeted in 'new tab' instead of self or new window.
Since they copied the feature from Firefox, I believe the hot key ctrl + t would work. Or right clicking on the blank space to the right of the tabs. But I don't use IE, so..
you'd probably have more chance finding an answer to this in the javascript sub-forum.. although i believe masoko is right, it seems to me that at one point before i had set up my browser to automatically open pages as a new tab rather than a new window.. there were some pages that would open as a new tab regardless.. so maybe it is possible.. i can't say for sure, that was a while ago. sorry if i've been absolutely no help at all haha
GAAARGH!!! Sorry. Just needed to get that out of the way first. There is a REASON target= for anything other than frames was pulled from the strict specifications, as overriding the browsers default behavior is annoying, impolite and in general an all around BAD IDEA. If I want a link to open in a new window, I will CHOOSE 'open in new window' - If I want a link to open in a new tab, I will CHOOSE 'open in new tab'... otherwise forcing a link to open any way other than the default link behavior of the 'current window' just makes browsing inconsistant, annoying, and counterintuitive.