// JavaScript Document

function First() {
	$("#sqImg").fadeOut("normal");
	$("#sqImg").attr("src","images/0.jpg");
	$("#sqImg").fadeIn("normal");
	
}

function Last() {
	$("#sqImg").fadeOut("normal");
	$("#sqImg").attr("src","images/24.jpg");
	$("#sqImg").fadeIn("normal");
}

function Per() {
	var src = $("#sqImg").attr("src");
	var endIndex = src.indexOf('.');
	var imgId = src.substring(7, endIndex);
	if(imgId > 0) {
		imgId--;
	}
	$("#sqImg").fadeOut("normal");
	src = "images/"+imgId+".jpg";
	$("#sqImg").attr("src",src);
	$("#sqImg").fadeIn("normal");

}

function Next() {
	var src = $("#sqImg").attr("src");
	var endIndex = src.indexOf('.');
	var imgId = src.substring(7, endIndex);
	if(imgId < 24) {
		imgId++;
	}
	$("#sqImg").fadeOut("normal");
	src = "images/"+imgId+".jpg";
	$("#sqImg").attr("src",src);
	$("#sqImg").fadeIn("normal");

}