if (document.images) {
	
	var lang_e_on = new Image()
	lang_e_on.src = "images/button/on/lang_e_f.gif"
	var lang_e_off = new Image() 
	lang_e_off.src = "images/button/off/lang_e_f.gif"
  
	var lang_j_on = new Image()
	lang_j_on.src = "images/button/on/lang_j_f.gif"
	var lang_j_off = new Image() 
	lang_j_off.src = "images/button/off/lang_j_f.gif"
    
	
	var bt01_on = new Image()
	bt01_on.src = "images/button/on/bt_01_f.gif"
	var bt01_off = new Image() 
	bt01_off.src = "images/button/off/bt_01_f.gif"
  
	var bt02_on = new Image()
	bt02_on.src = "images/button/on/bt_02_f.gif"
	var bt02_off = new Image() 
	bt02_off.src = "images/button/off/bt_02_f.gif"
	
	var bt03_on = new Image()
	bt03_on.src = "images/button/on/bt_03_f.gif"
	var bt03_off = new Image() 
	bt03_off.src = "images/button/off/bt_03_f.gif"
  
	var bt04_on = new Image()
	bt04_on.src = "images/button/on/bt_04_f.gif"
	var bt04_off = new Image() 
	bt04_off.src = "images/button/off/bt_04_f.gif"
	
	var bt05_on = new Image()
	bt05_on.src = "images/button/on/bt_05_f.gif"
	var bt05_off = new Image() 
	bt05_off.src = "images/button/off/bt_05_f.gif"
  
	var bt06_on = new Image()
	bt06_on.src = "images/button/on/bt_06_f.gif"
	var bt06_off = new Image() 
	bt06_off.src = "images/button/off/bt_06_f.gif"
	
	var bt07_on = new Image()
	bt07_on.src = "images/button/on/bt_07_f.gif"
	var bt07_off = new Image() 
	bt07_off.src = "images/button/off/bt_07_f.gif"
  
	var bt08_on = new Image()
	bt08_on.src = "images/button/on/bt_08_f.gif"
	var bt08_off = new Image() 
	bt08_off.src = "images/button/off/bt_08_f.gif"
	
  
	var event_on = new Image()
	event_on.src = "images/button/on/bt_eventinfo_f.jpg"
	var event_off = new Image() 
	event_off.src = "images/button/off/bt_eventinfo_f.jpg"
  
	var event_p_on = new Image()
	event_p_on.src = "images/button/on/bt_eventinfo_p.jpg"
	var event_p_off = new Image() 
	event_p_off.src = "images/button/off/bt_eventinfo_p.jpg"
	
	var event_c_on = new Image()
	event_c_on.src = "images/button/on/bt_eventinfo_c.jpg"
	var event_c_off = new Image() 
	event_c_off.src = "images/button/off/bt_eventinfo_c.jpg"
	
	var send_on = new Image()
	send_on.src = "images/button/on/bt_send_f.jpg"
	var send_off = new Image() 
	send_off.src = "images/button/off/bt_send_f.jpg"
	
	var resume_on = new Image()
	resume_on.src = "images/button/on/bt_dlresume.gif"
	var resume_off = new Image() 
	resume_off.src = "images/button/off/bt_dlresume.gif"
	
	var entpass_on = new Image()
	entpass_on.src = "images/button/on/bt_enter_pass.gif"
	var entpass_off = new Image() 
	entpass_off.src = "images/button/off/bt_enter_pass.gif"
	
	var contact_on = new Image()
	contact_on.src = "images/button/on/bt_contact.jpg"
	var contact_off = new Image() 
	contact_off.src = "images/button/off/bt_contact.jpg"
  }  
function inact(imgName) {
	
  if (document.images)
    document[imgName].src = eval(imgName + 'off.src');
}

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