Unsual beahavior of htaccess
 

I installed same script on same domain several time and it uses htaccess and htpasswd for username and password.But when i login to script two and return to script one tab it jumps again username and password and that repeat everytime when i go other other script on same domain.If i remain work on script one it wont shows again until i go to script two.This is problem beacuse i working at same time on those scripts and that make it impossible to work beacuse username password box popup all the time.I thinking about using other method of authentication but that only as a last solution.