Mine

var dataARR:Array = ["720p","SD","720p","SD"];
var customARR:Array = new Array();
var xCount:Number = 0;
var yCount:Number = 0;

for(xCount = 0; xCount < dataARR.length; xCount++){
	found = false
	for(yCount = 0; yCount < customARR.length; yCount++){
		if(!found){
			found = customARR[yCount] == dataARR[xCount];
		}
	}
	if(!found){
		customARR.push(dataARR[xCount]);
	}
}