function returnLongestWord(string){
	var temp = 0;
	var tempWord;
	var split = string.split(' ');
	for(var i=0, len = split.length; i<len; i++){

	     if( temp < split[i].length ) {
	     		temp = split[i].length;
     			tempWord = split[i];
	     }
	}
	return tempWord;
}