function replaceElement(data){
	var dir = window.document.getElementById("change-title");
	dir.innerHTML = eval("title_"+data);
	
	var dir = window.document.getElementById("change-body");
	dir.innerHTML = eval("body_"+data);
	
	var dir = window.document.getElementById("change-btn");
	dir.innerHTML = eval("btn_"+data);
	
	var dir = window.document.getElementById("change-img");
	dir.innerHTML = eval("img_"+data);
}