A three frame sequence which loops around frame 2 until the last of a group of variables has safely arrived, either from a text file, or a requested url. The movie arranges all the buttons in the last frame where any unique labels and values can be assigned, and stops. The code for the buttons is a call to a function where it's name, ID, and any other data created and passed by the button is processed.
e.g:
  on (release) {
    var1 = this._width;
    var2 = this.var_created_or_supplied_at_runtime;
    a_function_wot_i_rote(var1, var2);
  }

Load the variables in frame 1 ...
 loadVariablesNum("1_line_file_of_name-value_pairs_in_it.txt", 0);

...then loop around frame 2 asking...
 if (done == "true"){ gotoAndStop(3); } else { gotoAndPlay(1); }

In frame 3 the successfully loaded variables can be assigned
to arrary elements, and the array lengths detected.
 Decade_labels = in_Decade_labels.split(","); Alpha_labels = in_Alpha_labels.split(","); Category_labels = in_Category_labels.split(","); Albumthumb_labels = in_Albumthumb_labels.split(","); Decade_array_length = Decade_labels.length; Alpha_array_length = Alpha_labels.length; Category_array_length = Category_labels.length; Albumthumb_array_length = Albumthumb_labels.length;

Set starting x and y values and duplicate the first button clip.
 // 1 row of 5 DATE BUTTONS xstartpos = 33; ystartpos = 20; xpos_inc = 22; ypos_inc = 0; i_inc = 0; bttn_desc = "Decade"; array_length = Decade_array_length; bttn_labels = Decade_labels; xpos = xstartpos; ypos = ystartpos; for (i=0; i<array_length; i++) { new_i = i+i_inc; the_old_button = bttn_desc+"0"; the_new_button = bttn_desc+i; if (i>0) { duplicateMovieClip(the_old_button, the_new_button, new_i); } setProperty(the_new_button, _x, xpos); setProperty(the_new_button, _y, ypos); _level0[the_new_button].txt = bttn_labels[i]; // Create any further variable names. _level0[the_new_button].idname = bttn_desc; _level0[the_new_button].idnumber = i; xpos = xpos+xpos_inc; }

The A to Z buttons require a loop that will reset x to it's starting value,
and increase y by the height of a button at the half-way point.
 // 2 rows of 13 A TO Z BUTTONS xstartpos = 18; ystartpos = 34; xpos_inc = 10; ypos_inc = 12; new_row_point = 12; i_inc = 4; bttn_desc = "Alpha"; array_length = Alpha_array_length; bttn_labels = Alpha_labels; xpos = xstartpos; ypos = ystartpos; for (i=0; i<array_length; i++) { new_i = i+i_inc; the_old_button = bttn_desc+"0"; the_new_button = bttn_desc+i; if (i>0) { duplicateMovieClip(the_old_button, the_new_button, new_i); } setProperty(the_new_button, _x, xpos); setProperty(the_new_button, _y, ypos); _level0[the_new_button].txt = bttn_labels[i]; _level0[the_new_button].idname = bttn_desc; _level0[the_new_button].idnumber = i; xpos = xpos+xpos_inc; if (i == new_row_point) { xpos = xstartpos; ypos = ypos+ypos_inc; } }

Alter a few variables and we have four rows and two columns of larger buttons.
 // 4 rows of 2 CATEGORY BUTTONS xstartpos = 44; ystartpos = 61; xpos_inc = 66; ypos_inc = 14; new_row_point = 3; i_inc = 29; bttn_desc = "Category"; array_length = Category_array_length; bttn_labels = Category_labels; xpos = xstartpos; ypos = ystartpos; for (i=0; i<array_length; i++) { new_i = i+i_inc; the_old_button = bttn_desc+"0"; the_new_button = bttn_desc+i; if (i>0) { duplicateMovieClip(the_old_button, the_new_button, new_i); } setProperty(the_new_button, _x, xpos); setProperty(the_new_button, _y, ypos); _level0[the_new_button].txt = bttn_labels[i]; _level0[the_new_button].idname = bttn_desc; _level0[the_new_button].idnumber = i; ypos = ypos+ypos_inc; if (i == new_row_point) { xpos = xpos+xpos_inc; ypos = ystartpos; } }

The last group need the final row to be offset if those two buttons are to be centered.
 // 3 rows of 5 and 1 centered row of 2 ALBUMTHUMB BUTTONS xstartpos = 26; ystartpos = 120; xpos_inc = 26; ypos_inc = 15; new_row_point = 5; offset_row = 3; i_inc = 43; bttn_desc = "Albumthumb"; array_length = Albumthumb_array_length; bttn_labels = Albumthumb_labels; xpos = xstartpos; ypos = ystartpos; next_row_counter = 0; offset_counter = 0; for (i=0; i<array_length; i++) { next_row_counter++; new_i = i+i_inc; the_old_button = bttn_desc+"0"; the_new_button = bttn_desc+i; if (i>0) { duplicateMovieClip(the_old_button, the_new_button, new_i); } setProperty(the_new_button, _x, xpos); setProperty(the_new_button, _y, ypos); _level0[the_new_button].txt = bttn_labels[i]; _level0[the_new_button].idname = bttn_desc; _level0[the_new_button].idnumber = i; xpos = xpos+xpos_inc; if (next_row_counter == new_row_point) { next_row_counter = 0; offset_counter++; xpos = xstartpos; ypos = ypos+ypos_inc; if (offset_counter == offset_row){ xpos = xpos+xpos_inc/2*3; } } }