/***判断是否为邮箱***/ 
function isEmail(str) 
{ 
 	if(str.match(/[\w-.]+@{1}[\w-]+\.{1}\w{2,4}(\.{0,1}\w{2}){0,1}/ig)!=str) 
  		return false; 
 	else 
  		return true; 
} 

function checkpassword(str){
	 var len;
	 var i;
	 len = 0;
	 for (i=0;i<str.length;i++){
	  	if (str.charCodeAt(i)>255) len+=2; else len++;
	 }
	 return len;
}

function checkFileType(str){
	var pos = str.lastIndexOf(".");
	var lastname = str.substring(pos,str.length) //此处文件后缀名也可用数组方式获得str.split(".")
	if (lastname.toLowerCase()!=".jpg" && lastname.toLowerCase()!=".JPG")
	{
		return false;
	}else{
		return true;
	}
}

function gbcount(message,total,used,remain)
{
	var max;
	max = total.value;
	if (message.value.length > max) {
		message.value = message.value.substring(0,max);
		used.value = max;
		remain.value = 0;
		alert("字数限50字以内");
	}
	else {
		used.value = message.value.length;
		remain.value = max - used.value;
	}
}

function copyToClipBoard(){
	var clipBoardContent='';
	clipBoardContent+=document.getElementById("copylink").value;
	window.clipboardData.setData("Text",clipBoardContent);
	alert("复制成功，你可以粘贴到QQ/MSN等发给好友");
}

function copyclick(){
	var url='photo.php';
	var pars = 'action=copy';
	var myAjax3 = new Ajax.Request(url, {method: 'get', parameters: pars, onSuccess:funCopyResult, onFailure:reportError});
}

function funCopyResult(req){
	if(req.responseText=='good'){
		tag='good';
	}
}

//ajax错误信息报告
function reportError(){
	return;
}