//ロールオーバー
/*
Standards Compliant Rollover Script
*/
function initRollovers() {
  if (!document.getElementById) return
  var aPreLoad = new Array();
  var sTempSrc;
  var aImages = document.getElementsByTagName('img');

  for (var i = 0; i < aImages.length; i++) {
    if (aImages[i].className == 'imgover') {
      var src = aImages[i].getAttribute('src');
      var ftype = src.substring(src.lastIndexOf('.'), src.length);
      var hsrc = src.replace(ftype, '_o'+ftype);
      aImages[i].setAttribute('hsrc', hsrc);
      aPreLoad[i] = new Image();
      aPreLoad[i].src = hsrc;
      aImages[i].onmouseover = function() {
	sTempSrc = this.getAttribute('src');
	this.setAttribute('src', this.getAttribute('hsrc'));
      }
      aImages[i].onmouseout = function() {
	if (!sTempSrc) sTempSrc = this.getAttribute('src').replace('_o'+ftype, ftype);
	  this.setAttribute('src', sTempSrc);
      }
    }
  }
}

//window.onload = initRollovers;
addEvent(window,"load",initRollovers);

function externalLinks() {  
if (!document.getElementsByTagName) return;  
var anchors = document.getElementsByTagName("a");  
for (var i=0; i<anchors.length; i++) {  
var anchor = anchors[i];  
if (anchor.getAttribute("href") &&  
anchor.getAttribute("rel") == "external")  
anchor.target = "_blank";  
}  
}  
//window.onload=externalLinks;  
addEvent(window,"load",function(){externalLinks()});

//onloadをまとめて
function addEvent(elm,listener,fn){
	try{
		elm.addEventListener(listener,fn,false);
	}catch(e){
		elm.attachEvent("on"+listener,fn);
	}
}