var picked = type_ahead (["bat", "bear", "beaver", "bee", "cat", "cats_and_dogs", "dog", "maggot", "moose", "moth", "mouse"]); 
 
function type_ahead (array) 
{ 
	var w = new Window ("dialog", "Quick select"); 
	var entry = w.add ("edittext", [0, 0, 150, 22]); 
	entry.active = true; 
	var list = w.add ("listbox", [0, 0, 150, 220], array, {scrolling: true}); 
	list.selection = 0; 
	entry.onChanging = function () 
	{ 
		var temp = this.text; 
		list.removeAll (); 
		for (var i = 0; i < array.length; i++) 
		{ 
			if (array[i].toLowerCase().indexOf (temp) == 0) 
				list.add ("item", array[i]); 
		} 
		if (list.items.length > 0) 
			list.selection = 0; 
	} 
	entry.onChange = function () {w.close (1)} 
	if (w.show () != 2) 
		return list.selection.text; 
	else 
		w.close (); 
} 

	entry.onChanging = function ()  
	{  
		var temp = this.text;  
		var tempArray = []; 
		for (var i = 0; i < array.length; i++)  
		{  
			if (array[i].toLowerCase().indexOf (temp) == 0)  
				tempArray[tempArray.length] = array[i];  
		}  
		if (tempArray.length > 0)  
			list.selection = 0;  
		tempList = w.add ("listbox", list.bounds, tempArray, {scrolling: true});  
		w.remove(list); 
		list = tempList; 
	} 

entry.onChanging = function ()   
	{   
		var temp = this.text;   
		var tempArray = [];  
		for (var i = 0; i < array.length; i++)   
		{   
			if (array[i].toLowerCase().indexOf (temp) == 0)   
				tempArray[tempArray.length] = array[i];   
		}   
		if (tempArray.length > 0) 
			{ 
			tempList = w.add ("listbox", list.bounds, tempArray, {scrolling: true});   
			w.remove(list);  
			list = tempList;  
			list.selection = 0; 
			} 
	}