arrayuniq.js

var unique = function(origArr) {  
	var newArr = [],  
		origLen = origArr.length,  
		found,  
		x, y;  

	for ( x = 0; x < origLen; x++ ) {  
		found = undefined;  
		for ( y = 0; y < newArr.length; y++ ) {  
			if ( origArr[x] === newArr[y] ) {  
				found = true;  
				break;  
			}  
		}  


		if ( !found) newArr.push( origArr[x] );  
	}  
	return newArr;  
};