var btn_submit_out = new Image(89, 21);
var btn_submit_over = new Image(89, 21);
var btn_free_inf_out = new Image(149, 21);
var btn_free_inf_over = new Image(149, 21);
var btn_question_out = new Image(191, 21);
var btn_question_over = new Image(191, 21);

btn_submit_out.src = "imgs/btn_submit_out.gif";
btn_submit_over.src = "imgs/btn_submit_over.gif";
btn_free_inf_out.src = "imgs/btn_free_inf_out.gif";
btn_free_inf_over.src = "imgs/btn_free_inf_over.gif";
btn_question_out.src = "imgs/btn_question_out.gif";
btn_question_over.src = "imgs/btn_question_over.gif";