function myFocus(element) {
     if (element.value == element.defaultValue) {
       element.value = '';
       element.className='active_input';
     }
   }
   function myBlur(element) {
     if (element.value == '') {
       element.value = element.defaultValue;
       element.className='';
     }
   }
    function myChange(element) {
    	 element.className='active_input';
   }