/*プルダウンメニュー*/

function replaceEle(){  
if(document.getElementById){  
var obj = document.getElementById("menu");  
obj.innerHTML = obj.innerHTML.replace(/<dt>/gi, '<dt onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');  
obj.innerHTML = obj.innerHTML.replace(/<li>/gi, '<li onmouseover="popupMenu(this);" onmouseout="hiddenMenu(this);">');  
}  
}  
function popupMenu( obj ){  
var menu = obj.getElementsByTagName("ul").item(0);  
if(menu){  
menu.style.display = "block";  
}  

}  
function hiddenMenu( obj ){  
var menu = obj.getElementsByTagName("ul").item(0);  
if(menu){  
menu.style.display = "none";  
}  
}