Write a complete webpage with JavaScript embedded at document level that 1) Read three positive integers from the user using prompt0 function. You may need use parselnt0 or Number) to convert a string to an integer. 2) Calculate the maximum, the minimum, and the average of above four integers and save them into three variables. 3) Use innerHTML, document.write0, window.alert0 to print the maximum, the minimum, and the average e respectively. 1) Each output statement must be used at least once 2) No library function can be used