//�鴁E�
   
function init(){
	  
// �����������ɤ�ɽ���ȥ���E
document.getElementById('viewsource-a').onclick = getToggleClosure2( document.getElementById('sourcecode-a'), viewSourceCode);
document.getElementById('viewsource-b').onclick = getToggleClosure2( document.getElementById('sourcecode-b'), viewSourceCode2);

}
  
  
function getToggleClosure2( target, callback ){
var flag = true;
var target = target;
var callback = callback
return function(){
flag = !flag;  
callback.apply( this, [ target, flag ] );
};
}
  
function viewSourceCode( target, flag ){
target.style.display = ( flag )? 'none' : 'block';
document.getElementById('img01').src = ( flag )? "../img/shousai.gif" : "../img/tojiru.gif";
}

function viewSourceCode2( target, flag ){
target.style.display = ( flag )? 'none' : 'block';
document.getElementById('img02').src = ( flag )? "../img/shousai.gif" : "../img/tojiru.gif";
}
  



if( /msie/.test(navigator.userAgent.toLowerCase()) )
window.attachEvent( 'onload', init );
else
window.addEventListener( 'load', init, true );