// 
function showLayer(layName) {
var oj = is_layoj(layName);
oj.visibility = 'visible';
}
// 
function hideLayer(layName){
//if(! layFlag){
var oj = is_layoj(layName);
oj.visibility = 'hidden'
//}
}

// 
function is_layoj(layName){
	if(NN)  return document.layers[layName];
	if(IE)  return document.all(layName).style;
	if(NN6) return document.getElementById(layName).style;
}

function Over(id,layName){
      document.getElementById(id).style.backgroundImage = 'url(/imgcommon/shim.gif)'; 
	  showLayer(layName);
}
function M_Out(id,layName){
      document.getElementById(id).style.backgroundImage = 'url(/imgcommon/m_menu_off.jpg)';
	  hideLayer(layName);
}
function K_Out(id,layName){
      document.getElementById(id).style.backgroundImage = 'url(/imgcommon/k_menu_off.jpg)';
	  hideLayer(layName);
}
function I_Out(id,layName){
      document.getElementById(id).style.backgroundImage = 'url(/imgcommon/i_menu_off.jpg)';
	  hideLayer(layName);
}