Confirm window with parameters
alertes=new Array("LightGrey","black","yellow","red",14,"Arial",150,100,200,100);
chaines=new Array("You will change","attributs of rectangle","Yes","No");
Parameters for look:
Colors background, border, button, text, size and fonr for text, coordinates
left top vertice, width and height of window.
Text to write:
Array of phrases to write, the last two are texts for buttons.