substring text searching

I have a function that sends a search term, xmllist & content to be  
searched with indexes at end of each line to represent item in  
xmllist. The function then outputs and xmllist of the found nodes  
that have the search term in them however if the the text in the node  
has two words or more words that are the same it will add that node  
however many times that word appears. How can I prevent this?

function searchStringInAttribute(list:XMLList, attributelist:String,  
term:String):XMLList {
	var output:XMLList = new XMLList();
	//trace("ALIST {" + attributelist + " } ALIST End " + "\n");
	var i:Number = 0;
	var pos:Number = 0;
	var index:int = 0;
	var count:int = 0;
	while (i > -1) {
		pos = attributelist.indexOf(term, i);
		if (pos > -1) {
			index = int( attributelist.substring(attributelist.indexOf("<",  
pos)+1, attributelist.indexOf(">", pos)) );
			output[count] = list[index];
			count++;
			i = pos+term.length;
		} else {
			i = pos;
		}
	}
	return output;
}


adam randlett



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