pic1= new Image(); 
pic1.src="/2009/images/buttonhomealt.jpg"; 
pic1.src="/2009/images/buttonaboutalt.jpg"; 
pic1.src="/2009/images/buttongroupsalt.jpg"; 
pic1.src="/2009/images/buttonticketsalt.jpg"; 
pic1.src="/2009/images/buttonworkshopsalt.jpg"; 
pic1.src="/2009/images/buttonvenuesalt.jpg"; 
pic1.src="/2009/images/buttonaustinalt.jpg"; 
pic1.src="/2009/images/buttonsponsorsalt.jpg"; 
pic1.src="/2009/images/buttoncontactalt.jpg"; 


function toggle_button(e) {
  button = $(e).select('img')[0];
  if (button.src.match('alt')) {
    button.src = button.src.replace('alt.jpg','.jpg');
  } 
  else {
    button.src = button.src.replace('.jpg','alt.jpg');
  }
}