Question about delay (again)

[font=Arial]Hello guys. My first post on this forum. First, sorry for my English. [/font]

[font=Arial]I search forum for tutorials on how to do this type of delay, find some very informative posts, but… I’m not a scripter, and still have no luck to integrate this “setinterval” in my script.[/font]

[font=Times New Roman][size=3][font=Arial][size=2]Here is how my script looks.[/size][/font] [/size][/font]
[font=Times New Roman][size=3]---------------------------------------------------------------------------------
[font=Arial][color=navy]btn_xpos = 40;[/color][/font]
[font=Arial][color=navy]btn_ypos = 40;[/color][/font]
[font=Arial][color=navy]growth = 0;[/color][/font]

[font=Arial][/font]
[font=Arial][color=navy]function place_btns() {[/color][/font]
[font=Arial][color=navy]duplicateMovieClip(“btn”, “btn”+growth, growth);[/color][/font]
[font=Arial][color=navy]this[“btn”+growth]._x = btn_xpos;[/color][/font]
[font=Arial][color=navy]this[“btn”+growth]._y = btn_ypos;[/color][/font]
[font=Arial][color=navy]this[“btn”+growth].onRollOver = function() {[/color][/font]
[font=Arial][color=navy]trace(this._name);[/color][/font][/size][/font]
[font=Arial][/font][size=3]
[font=Arial][color=navy]};[/color][/font]
[font=Arial][color=navy]btn_xpos += 70;[/color][/font]
[font=Arial][color=navy]if (btn_xpos>=200) {[/color][/font]
[font=Arial][color=navy]btn_ypos += 48;[/color][/font]
[font=Arial][color=navy]btn_xpos = 40;[/color][/font]
[font=Arial][color=navy]}[/color][/font]
[font=Arial][size=3][/size][/font]
[font=Arial][color=navy]}[/color][/font]
[font=Arial][color=navy]for (i=1; i<=20; i++) {[/color][/font]
[font=Arial][color=navy]growth++;[/color][/font]
[font=Arial][color=navy]place_btns();[/color][/font]
[font=Arial][color=navy]}[/color][/font]
[font=Arial] [/font]
[font=Times New Roman][/font][/size][font=Times New Roman][size=3]--------------------------------------------------------------------------
[/size][/font]
[font=Arial]What I need is to use some kind of delay. In this script , I duplicate buttons 20 times. It work fine, but they all appear instantly. What I need, is some kind of delay between appearances of each button. Like 1-2 seconds.[/font]

[font=Arial]If some one can help, and post this script with integrated “setinterval” in correct place, I will appreciate it.[/font]

[font=Arial]Thanks in advance.[/font]