function sax_getbyid(id) {
	itm = null;
	if (document.getElementById) {
		itm = document.getElementById(id);
	} else if (document.all)	{
		itm = document.all[id];
	} else if (document.layers) {
		itm = document.layers[id];
	}
	return itm;
}

function copytburl(obj){
	var rng = document.body.createTextRange();
	rng.moveToElementText(obj);
	rng.scrollIntoView();
	rng.select();
	rng.execCommand("Copy");
	rng.collapse(false);
	alert('该地址已经复制到剪切板');
}

function ctlent(event) {
	if((event.ctrlKey && event.keyCode == 13) || (event.altKey && event.keyCode == 83)) {
		sax_getbyid("submit").click();
	}
}

function addquote(obj,strAuthor){
	var text = sax_getbyid(obj).innerHTML;
	text = text.replace(/alt\=(\"|)([^\"\s]*)(\"|)/g,"> $2 <");
	text = text.replace(/\<[^\<\>]+\>/g,"\n");
	text = text.replace(/ +/g," ");
	text = text.replace(/\n+/g,"\n");
	text = text.replace(/^\n*/gm,"");
	text = text.replace(/^\s*/gm,"");
	text = text.replace(/\n*$/gm,"");
	text = text.replace(/\s*$/gm,"");
	text = text.replace(/&lt;/g,"<");
	text = text.replace(/&gt;/g,">");
	text = text.replace(/&nbsp;&nbsp;/g,"  ");
	text = text.replace(/&amp;/g,"&");
	sax_getbyid("content").value += "[quote="+strAuthor+"]"+text+"[/quote]";
	sax_getbyid("content").focus();
}

function checkform() {
	if (sax_getbyid('username')) {
		if (sax_getbyid('username').value == "") {
			alert("请输入您的名字.");
			return false;
		}
	}
	if (sax_getbyid('url').value == "")	{
		alert("请输入主页地址.");
		return false;
	}
	if (sax_getbyid('email').value == "")	{
		alert("请输入邮件地址.");
		return false;
	}
	if (sax_getbyid('content').value == "")	{
		alert("请输入内容.");
		return false;
	}
	if (((postminchars != 0 && sax_getbyid('content').value.length < postminchars) || (postmaxchars != 0 && sax_getbyid('content').value.length > postmaxchars))) {
		alert("您的评论内容长度不符合要求。\n\n当前长度: "+sax_getbyid('content').value.length+" 字节\n系统限制: "+postminchars+" 到 "+postmaxchars+" 字节");
		return false;
	}			
	sax_getbyid('submit').disabled = true;
	return true;
}

function checkloginform() {
	if (sax_getbyid('username')) {
		if (sax_getbyid('username').value == "") {
			alert("请输入您的名字.");
			return false;
		}
	}
	if (sax_getbyid('password')) {
		if (sax_getbyid('password').value == "") {
			alert("请输入密码.");
			return false;
		}
	}
	if (sax_getbyid('confirmpassword')) {
		if (sax_getbyid('confirmpassword').value == "") {
			alert("请输入确认密码.");
			return false;
		}
	}
	return true;
}

function showhide(obj) {
	var fh = sax_getbyid(obj);
	fh.className == "divON" ? fh.className = "divOFF" : fh.className = "divON";
}

function copyurl(url){
	var clipBoardContent=document.location.href;
	window.clipboardData.setData("Text",clipBoardContent);
}