// ==UserScript==
// @name        Preventions year picker
// @namespace   stanscript
// @description Lists years
// @include     *oscarPrevention/AddPreventionData.jsp*
// @version     1
// @require   http://ajax.googleapis.com/ajax/libs/jquery/1.3.1/jquery.min.js
// @grant       none
// ==/UserScript==

var d = new Date();
var n = d.getFullYear();

var myYears = []
for(i=0; i<17; i++){
  myYears[i] =   n-i-1
}

function myFunction() {
    var x = document.createElement("SELECT");
    x.setAttribute("id", "mySelect");
    x.setAttribute("style", "width:60px;font-size:16px;position:fixed;top:50px;left:50px; ");

for(i=0; i<17; i++){   
document.body.appendChild(x);
    var z = document.createElement("option");
    z.setAttribute("value", myYears[i]);
    var t = document.createTextNode(myYears[i]);
    z.appendChild(t);
    z.onclick = showalert
    document.getElementById("mySelect").appendChild(z);
}
  
}

myFunction()
document.getElementById("mySelect").size = "17";
function showalert(){
var x = document.getElementById("mySelect").value;
$('#prevDate').val(x+"-11-01")
}