if (document.images) {
  //menu
  var homeOFF = new Image(); homeOFF.src="images/buttons/home.gif";
  var homeON = new Image(); homeON.src="images/buttons/home_roll.gif";
  var aleOFF = new Image(); aleOFF.src="images/buttons/ale.gif";
  var aleON = new Image(); aleON.src="images/buttons/ale_roll.gif";
  var ceraOFF = new Image(); ceraOFF.src="images/buttons/cera.gif";
  var ceraON = new Image(); ceraON.src="images/buttons/cera_roll.gif";
  var dollsOFF = new Image(); dollsOFF.src="images/buttons/dolls.gif";
  var dollsON = new Image(); dollsON.src="images/buttons/dolls_roll.gif";
  var flowersOFF = new Image(); flowersOFF.src="images/buttons/flowers.gif";
  var flowersON = new Image(); flowersON.src="images/buttons/flowers_roll.gif";  
  var wallOFF = new Image(); wallOFF.src="images/buttons/wall.gif";
  var wallON = new Image(); wallON.src="images/buttons/wall_roll.gif";  
  var furnOFF = new Image(); furnOFF.src="images/buttons/furn.gif";
  var furnON = new Image(); furnON.src="images/buttons/furn_roll.gif";  
  var equiOFF = new Image(); equiOFF.src="images/buttons/equi.gif";
  var equiON = new Image(); equiON.src="images/buttons/equi_roll.gif";  
  var talaOFF = new Image(); talaOFF.src="images/buttons/tala.gif";
  var talaON = new Image(); talaON.src="images/buttons/tala_roll.gif";  
  
  var meetOFF = new Image(); meetOFF.src="images/buttons/meet.gif";
  var meetON = new Image(); meetON.src="images/buttons/meet_roll.gif";  
  var contactOFF = new Image(); contactOFF.src="images/buttons/contact.gif";
  var contactON = new Image(); contactON.src="images/buttons/contact_roll.gif";
  var aboutOFF = new Image(); aboutOFF.src="images/buttons/about.gif";
  var aboutON = new Image(); aboutON.src="images/buttons/about_roll.gif";
 }


function act(imgName) {
 if (document.images) 
  document[imgName].src = eval(imgName + 'ON.src')
}

function inact(imgName) {
 if (document.images)
  document[imgName].src = eval(imgName + 'OFF.src')
}