function sx() {

                var rntArray = [],                temp,                hasValue;                var array = document.getElementById("test").value.split("\n");                for (var i in array) {                     temp = array[i];                    hasValue = false;                    for (var j in rntArray) {                         if (temp === rntArray[j]) {                             hasValue = true;                            break;                        }                    }                    if (hasValue === false) {                         rntArray.push(temp);                    }                }                document.getElementById("test").value = rntArray.join("\n");            }