Please, check with lint: ext-all*.js

I have one problem with older computers:

ext-all-debug.js Line: 39330

prepareItems : function(items, applyDefaults) {
//alert(items,applyDefaults);
if (Ext.isArray(items)) {
items = items.slice();
} else {
items = [items];
}



var me = this,
i = 0,
len = items.length,
item;


for (; i < len; i++) {
item = items[i];
if (item === null) {
Ext.Array.erase(items, i, 1);
--i;
--len;
} else {
if (applyDefaults) {
item = this.applyDefaults(item);
}

item.isContained = me;
items[i] = me.lookupComponent(item);


delete item.isContained;
delete items[i].isContained;
}
}


return items;
}