im1 = new Image();
im1.src = "files/b_home.gif";
im1_on = new Image();
im1_on.src = "files/b_home1.gif";

im2a = new Image();
im2a.src = "files/b_join.gif";
im2a_on = new Image();
im2a_on.src = "files/b_join1.gif";

im2b = new Image();
im2b.src = "files/b_profile.gif";
im2b_on = new Image();
im2b_on.src = "files/b_profile1.gif";

im3 = new Image();
im3.src = "files/b_search.gif";
im3_on = new Image();
im3_on.src = "files/b_search1.gif";

im4 = new Image();
im4.src = "files/b_contacts.gif";
im4_on = new Image();
im4_on.src = "files/b_contacts1.gif";

im5 = new Image();
im5.src = "files/b_chat.gif";
im5_on = new Image();
im5_on.src = "files/b_chat1.gif";

imOK = new Image();
imOK.src = "files/b_ok.gif";
imOK_on = new Image();
imOK_on.src = "files/b_ok1.gif";