question about IMG an Arrays- asap

Hi Guys!
This is My question:
i have an array with 3 IMGS
Here it is:

                        var Pics = new Array();
                        var Index = 0;
                        Pics[0] = new Image();
                        Pics[0].src = "images/pic_1.jpg";
                        Pics[1] = new Image();
                        Pics[1].src = "images/guitar.jpg";
                        Pics[2] = new Image();
                        Pics[2].src = "images/contrabas.jpg";

Code (markup):

I would like them to be effected from a class in a css file that contain the shape orders for the pictures. how can I give the cells in the array this class? how do i write it? how can i acsses the cells in the array or can I give the array itself the class? something like: pics.style.class="1"?
anyway I need you..

thanx
Prog frog

 

I've honestly never worked with loading images by doing "new Image()" but if you can set the source by doing .src the same way you would with a real <img> tag, then you might be able to do .className the same way you're doing the .src

Pics[0].className = "1";

Etc. Not sure if it'd work completely though..