How to assign an object via a variable in Javascript?

I have 1000 objects named from a_1 to a_1000 like this:

a_1 = new Option("text1", "Val1");
a_2 = new Option("text2", "Val2");
...
a_1000 = new Option("text1000", "Val1000");

Code (markup):

Now I want to add all to an array named obj_array as the following codes:

for(var i=1; i<=1000; i++){
    var obj_name =[B] "a_" + i[/B];
    obj_array[i] = obj_name;
}

Code (markup):

Above codes doesn't work as I expect because obj_name is really a String. What I need is a reference to the object. Do you know how to solve this problem? Please help me.

Thank you

 

Anybody can help me please!