// JavaScript Document

function reinitIframe(id){
	var iframe = document.getElementById(id);
	iframe.height = iframe.contentWindow.document.documentElement.scrollHeight;
}
setTimeout("reinitIframe('frame_content')", 200);

function backtop(){

	if(document.getElementById("faq_con").scrollTop<=0){
		document.getElementById("topbtn").style.top = 520 + "px";
	}else if(document.getElementById("faq_con").scrollTop>0){
		alert(document.getElementById("faq_con").scrollTop);
	}
}
setInterval("backtop()",1000);