$(function(){
	var hostname = $('h1 img').attr('src').replace(/\/image.*/, '');
	var imitateimage = "url(" + hostname + "/image/imitate-" + Math.floor(Math.random()*3+1) +".jpg) no-repeat left bottom";
	$(".imitateImage").css("background",imitateimage);
	var askimage = "url(" + hostname + "/image/ask-" + Math.floor(Math.random()*4+1) + ".jpg) no-repeat left bottom";
	$(".askImage").css("background",askimage);
});