var i;
var objs={};
for (i=0; i <10; i++)
{
   objs.i=new FooObject();
}

alert(objs.4.someMethod());

var i;
var objs = {};
for (i = 0; i < 10; i++) {
  objs[i] = new FooObject();
}

alert(objs[4].someMethod());

var x;
var myItems = new Array();
myItems[0] = "Foo";
myItems[9] = "Bar";
myItems[5] = "Fiz";

for (x in myItems) {
  alert(myItems[x]);
}

var i;
var objs = new Array();

for(i = 0; i < 10; i++)
{
   objs.push(new FooObject());
}


objs[4].someMethod();