var donateBtn = document.getElementById("donateBtn");
var school = document.getElementById("school");

addEvent(donateBtn, "click", ondonateBtnClick);

function ondonateBtnClick(e)
{
   if(school.value == '')
   {
      alert("Please select the school you'd like to donate to.");
      
      return false;
   }
   
   return true;
}