/* menu roll-over ---------------------------------------------------------- */
_envInit = function(){
	_setstat = function(obj,url){ return function(){obj.src = url} }
	_setroll = function(e1,e2,dir,ajst,ext){
		var obj,st;
		var pre1 = new Array(), pre2 = new Array();
		for(var x=1;x<=e2;x++){
			if(obj = document.getElementById(e1+x)){
				st = dir + "0" + x + ext;
				pre1[x] = new Image().src = st;
				obj.onmouseout  = _setstat(obj,st);

				st = dir + ajst + "0" + x + ext;
				pre2[x] = new Image().src = st;
				obj.onmouseover = _setstat(obj,st);
			}
		}
	}
	_setroll("env","3","/images/common/env/menu_","over_",".gif");
	_setroll("navi_menu","10","/images/common/navi/menu_","over_",".jpg");

	_OMover = function(obj){
		var bs  = obj.src;
		var ext = bs.substring(bs.length-4,bs.length);
		var ns  = bs.substring(0,bs.length-4) + "_over" + ext;
		obj.onmouseover = (function(ns){ return function(){obj.src=ns}})(ns);
		obj.onmouseout  = (function(bs){ return function(){obj.src=bs}})(bs);
	}
}