dynamically change class names

[calmchess]

I'm using the following script to change the class names of some elements and then as soon as I'm done changing those elements I want to get all the elements by their new class name and use them.  But when I do this I can't get the new elements. The alert at the bottom does nothing. Can somebody please help me figure this problem out. BTW. I've tried  running this with a for loop instead of reassigning them one by one but I have the same result. I think its a scope problem but I'm just guessing.

 

if(document.getElementsByClassName("admin").length!=0){

var adminCons0=document.getElementsByClassName("admin");

adminCons0[0].className=roomToChange0;

adminCons0[1].className=roomToChange0;

adminCons0[2].className=roomToChange0;

adminCons0[3].className=roomToChange0;

trackArr00 = document.getElementsByClassName(roomToChange0);

alert(trackArr00[0]);

}

[calmchess]

while loop to the rescue!

 

while (adminCons0.length) {

    adminCons0[0].className =roomToChange0;

}