// JavaScript Document

function rollover(elm){
	elm.src = '../btn/btn_'+elm.id+'_over.gif';
}
function rollout(elm){
	elm.src = '../btn/btn_'+elm.id+'_out.gif';
}
function appendEvents(obj){
	for(var i=0;i<obj.length;i++){
		var elm = obj[i].getElementsByTagName('img')[0];
		elm.onmouseover = function(){
			rollover(this);
		}
		elm.onmouseout = function(){
			rollout(this);
		}
	}
}

window.onload = function(){
	var bbtn = document.getElementById('collegenavi');
	var gbtn = document.getElementById('glovalnavigation');
	//var lbtn = document.getElementById('language');
	appendEvents(bbtn.getElementsByTagName('a'));
	appendEvents(gbtn.getElementsByTagName('a'));
	//appendEvents(lbtn.getElementsByTagName('a'));
	
	var f = document.getElementById('footer');
	var c = document.createElement('img');
	c.setAttribute('alt', 'Copyright KATAYANAGI INSTITUTE. All Rights Reserved.');
	c.setAttribute('src', '../images/footer_copyright.gif');
	f.appendChild(c);
}