gistfile1.txt

/* Inline approach */
function showDiv(elem){
      // If your value is not "Select", then show the next option
      document.getElementById('stepsHIDDEN').style.display = (elem.value != 'Select') ? "block" : "none";
      // If your value is "foo", then show another element
      document.getElementById('showMeOn42').style.display = (elem.value == '42') ? "block" : "none";
}

/* Switch statement approach */
function showDiv(elem){
     switch(elem.value){
         case 'Select':
            // Handle logic if 'Select' is selected
            document.getElementById('stepsHIDDEN').style.display = 'none';
         break;
         case '1':
            // Handle logic if '1' is selected
         break;
         default:
            // If your value is neither 'Select' or '1', do something
            document.getElementById('stepsHIDDEN').style.display = 'block';
         break;
     }
}