var navis = new Array("message", "company", "business", "csr", "recruit", "link")

var on_navigation  = new Array();
var off_navigation = new Array();

for(i=0; i<navis.length; i++) {
	on_navigation[navis[i]]  = new Image();
	off_navigation[navis[i]] = new Image();
	on_navigation[navis[i]].src   = myPath + '/shared/navi_' + navis[i] + '_on.gif';
	off_navigation[navis[i]] .src = myPath + '/shared/navi_' + navis[i] + '_off.gif';
}

function swap_navi(name, flag) {
	document.images[name].src = (flag) ? on_navigation[name].src : off_navigation[name].src;
}