You are attempting to send an invalid event.
function testCAPTCHA(){
if(document.getElementById("proof").value != "")
ajxOutput("https://www.wichita.edu/calendar/inc/captcha_chk.php?capEntered=" + document.getElementById("proof").value, "capChk", "https://www.wichita.edu/calendar");
else
alert("To confirm your authentication you must enter the text from the image.");
}
You are attempting to send an invalid event.