if (document.images) {
	schedule = new Image();
	schedule.src = "images/common/schedule.gif";
	menu00 = new Image();
	menu00.src = "images/common/menu00.gif";
	menu01 = new Image();
	menu01.src = "images/common/menu01.gif";
	menu02 = new Image();
	menu02.src = "images/common/menu02.gif";
	menu03 = new Image();
	menu03.src = "images/common/menu03.gif";
	menu04 = new Image();
	menu04.src = "images/common/menu04.gif";
	menu05 = new Image();
	menu05.src = "images/common/menu05.gif";

	schedule_over = new Image();
	schedule_over.src = "images/common/schedule_over.gif";
	menu00_over = new Image();
	menu00_over.src = "images/common/menu00_over.gif";
	menu01_over = new Image();
	menu01_over.src = "images/common/menu01_over.gif";
	menu02_over = new Image();
	menu02_over.src = "images/common/menu02_over.gif";
	menu03_over = new Image();
	menu03_over.src = "images/common/menu03_over.gif";
	menu04_over = new Image();
	menu04_over.src = "images/common/menu04_over.gif";
	menu05_over = new Image();
	menu05_over.src = "images/common/menu05_over.gif";
}

function imgOff(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + ".src");
	}
}

function imgOn(imgName) {
	if (document.images) {
		document[imgName].src = eval(imgName + "_over.src");
	}
}

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;