var a = Math.ceil(Math.random() * 10);
   var b = Math.ceil(Math.random() * 10);      
   var c = a + b
   function DrawAntyBoot()
   {
       document.write("Ile to "+ a + " + " + b +"? ");
       document.write("<input id='AntyBootInput' type='text' maxlength='2' size='2'/>");
   }    
   function ValidAntyBoot(){
       var d = document.getElementById('AntyBootInput').value;
       if (d == c) return true;        
       return false;
       
   }