/*
 * bibio用javaScript
 * mailto: yoshiori@gmail.com
 * url: http://yoshiori.seesaa.net/
 */
function getElementByClass(classname){
	var ccollect=new Array();
	var inc=0;
	var alltags=document.all? document.all : document.getElementsByTagName("div");
	for (var i=0; i<alltags.length; i++){
		if (alltags[i].className && alltags[i].className==classname)
			ccollect[inc++]=alltags[i];
	}
	return ccollect;
}
function showLayer(classname){ 
	var bibiohiddens = getElementByClass(classname);
	for (var i=0; i<bibiohiddens.length; i++){
		if(bibiohiddens[i].style.visibility == 'visible'){
			bibiohiddens[i].style.visibility = 'hidden';
			bibiohiddens[i].style.display = 'none';
		}else{
			bibiohiddens[i].style.visibility = 'visible';
			bibiohiddens[i].style.display = 'block';
		}	
	}
}
function showButton(){ 
	var bibios = getElementByClass('bibio');
	
	for(var i = 0 ; i < bibios.length ; i++ ){
		var bibioElements = bibios[i].getElementsByTagName("div");
		var bibioBody = null;
		var bibioHidden = null;
		for(var j = 0 ; j < bibioElements.length ; j++ ){
			if (bibioElements[j].className && bibioElements[j].className=='bibioBody'){
				bibioBody = bibioElements[j];
			}
			if(bibioElements[j].className && bibioElements[j].className=='bibioHidden'){
				bibioHidden = bibioElements[j];
			}
		}
		if(bibioBody && bibioHidden){
			bibioBody.innerHTML=bibioBody.innerHTML+"<br/><input type=\"button\" value=\"◆◇ネタバレ！！◇◆\" onclick=\"showLayer('bibioHidden')\"/><br/>";
		}
	}
}
showButton();