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Default Values In combobox when using dynamic xml without pre-populating select element

Someone asked this back in December (http://www.dhtmlx.com/docs/products/kb/index.shtml?cat=14&q=1378), wondering if anything came out of it.

Being able to trigger request when arrow is clicked but nothing is typed in to load results (all or some based on backend script) to allow a dynamic combobox that may have less than 100 options but could grow to 1000 later.

Allowing the backend script decide if it's best to load the 100 results, or display 'too many to show, type something'.

If you want to allow request send for empty combo - you need to comment next line
    dhtmlxcombo.js , line 918
// if (text=="") { this.closeAll();  return this.clearAll();   } // <<< this line need to be commented