/* -----------------------------------------------
FileName:default.js
----------------------------------------------- */

/* image roll
------------------------------------------------*/
function imgRoll(obj,flag) {
	var pathsrc = obj.getAttribute("src");
	var path = pathsrc.slice(0,pathsrc.lastIndexOf("/")+1);
	var imgname = pathsrc.slice(pathsrc.lastIndexOf("/")+1,pathsrc.length);
	if(flag) {
		var imgname = imgname.replace(/_off/i,"_on");
	} else {
		var imgname = imgname.replace(/_on/i,"_off");
	}
	obj.setAttribute("src",path + imgname);
}