/* --------------------------------------------------
	SiteName : yuukinotsubasa.com
	FileName : common.js
	Description : common scripts
	
-------------------------------------------------- */

/* 1. Swap Image
================================================== */
var swapImageObj;
var swapImageSrc;
function swapImgOver(obj) {
	swapImageObj = obj;
	swapImageSrc = obj.src;
	if(swapImageSrc.indexOf("_ov.gif") > 0) {
		s = swapImageSrc.indexOf("_ov.gif");
		obj.src = swapImageSrc.substring(0,s) + "_ov.gif";
	} else if(swapImageSrc.indexOf(".jpg") > 0) {
		s = swapImageSrc.indexOf(".jpg");
		obj.src = swapImageSrc.substring(0,s) + "_ov.jpg";
	} else {
		s = swapImageSrc.indexOf(".gif");
		obj.src = swapImageSrc.substring(0,s) + "_ov.gif";
	}
}
function swapImgOut(){
	swapImageObj.src = swapImageSrc;
}