//-- 只能输入数字
function isPressNumber(obj)
{
	var key=obj.keyCode;
	if ((key<48 ||key>57)&&key!=46)
		obj.returnValue=false;
}

//-- textarea字数统计、限定（邀请好友用）
function checkLength(which)
{
	var maxChars = 300;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（短消息用）
function checkMsgLength(which)
{
	var maxChars = 500;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（相册简介用）
function checkFDesLength(which)
{
	var maxChars = 120;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（话题用）
function checkTalkLength(which)
{
	var maxChars = 5000;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（话题用）
function checkEmbsLength(which)
{
	var maxChars = 8000;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（活动用）
function checkEventLength(which)
{
	var maxChars = 1000;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//-- textarea字数统计、限定（原创用）
function checkCompLength(which)
{
	var maxChars = 30000;
	if (which.value.length > maxChars)
		which.value = which.value.substring(0,maxChars);
	var curr = maxChars - which.value.length;
	document.getElementById("chLeft").innerHTML = curr.toString();
}

//函数名：fucCheckLength
//功能介绍：检查字符串的长度，一个汉字俩字符
//参数说明：要检查的字符串
//返回值：长度值
function fucCheckLength(strTemp)
{
 var i,sum;
 sum=0;
 for(i=0;i<strTemp.length;i++)
 {
  if ((strTemp.charCodeAt(i)>=0) && (strTemp.charCodeAt(i)<=255))
   sum=sum+1;
  else
   sum=sum+2;
 }
 return sum;
}

// 验证是否 为空
function isEmpty( strValue )
{
	var whites = " \t\n\r";
	for (var i=0; i<strValue.length; i++)
	{
		var temp = "" + strValue.substring(i, i+1);
		if (whites.indexOf(temp) == "-1")
			return false;
	}
	strValue= "";
	return true;
}

//函数名：MD5
//功　能：使用MD5加密算法加密密码字段信息
//参　数：要加密的字符串
//返回值：加密后的字符串
function md5Encrypt(sMessage)
{
	function RotateLeft(lValue, iShiftBits)
	{
		return (lValue<<iShiftBits) | (lValue>>>(32-iShiftBits));
	}
	function AddUnsigned(lX,lY)
	{
		var lX4,lY4,lX8,lY8,lResult;
		lX8 = (lX & 0x80000000);
		lY8 = (lY & 0x80000000);
		lX4 = (lX & 0x40000000);
		lY4 = (lY & 0x40000000);
		lResult = (lX & 0x3FFFFFFF)+(lY & 0x3FFFFFFF);
		if (lX4 & lY4)
			return (lResult ^ 0x80000000 ^ lX8 ^ lY8);
		if (lX4 | lY4)
		{
			if (lResult & 0x40000000)
				return (lResult ^ 0xC0000000 ^ lX8 ^ lY8);
			else
				return (lResult ^ 0x40000000 ^ lX8 ^ lY8);
		}
		else
			return (lResult ^ lX8 ^ lY8);
	}
	function F(x,y,z)
	{
		return (x & y) | ((~x) & z);
	}
	function G(x,y,z)
	{
		return (x & z) | (y & (~z));
	}
	function H(x,y,z)
	{
		return (x ^ y ^ z);
	}
	function I(x,y,z)
	{
		return (y ^ (x | (~z)));
	}
	function FF(a,b,c,d,x,s,ac)
	{
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(F(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	}
	function GG(a,b,c,d,x,s,ac)
	{
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(G(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	}
	function HH(a,b,c,d,x,s,ac)
	{
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(H(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	}
	function II(a,b,c,d,x,s,ac)
	{
		a = AddUnsigned(a, AddUnsigned(AddUnsigned(I(b, c, d), x), ac));
		return AddUnsigned(RotateLeft(a, s), b);
	}
	function ConvertToWordArray(sMessage)
	{
		var lWordCount;
		var lMessageLength = sMessage.length;
		var lNumberOfWords_temp1=lMessageLength + 8;
		var lNumberOfWords_temp2=(lNumberOfWords_temp1-(lNumberOfWords_temp1 % 64))/64;
		var lNumberOfWords = (lNumberOfWords_temp2+1)*16;
		var lWordArray=Array(lNumberOfWords-1);
		var lBytePosition = 0;
		var lByteCount = 0;
		while ( lByteCount < lMessageLength )
		{
			lWordCount = (lByteCount-(lByteCount % 4))/4;
			lBytePosition = (lByteCount % 4)*8;
			lWordArray[lWordCount] = (lWordArray[lWordCount] | (sMessage.charCodeAt(lByteCount)<<lBytePosition));
			lByteCount++;
		}
		lWordCount = (lByteCount-(lByteCount % 4))/4;
		lBytePosition = (lByteCount % 4)*8;
		lWordArray[lWordCount] = lWordArray[lWordCount] | (0x80<<lBytePosition);
		lWordArray[lNumberOfWords-2] = lMessageLength<<3;
		lWordArray[lNumberOfWords-1] = lMessageLength>>>29;
		return lWordArray;
	}
	function WordToHex(lValue)
	{
		var WordToHexValue="",WordToHexValue_temp="",lByte,lCount;
		for (lCount = 0;lCount<=3;lCount++)
		{
			lByte = (lValue>>>(lCount*8)) & 255;
			WordToHexValue_temp = "0" + lByte.toString(16);
			WordToHexValue = WordToHexValue + WordToHexValue_temp.substr(WordToHexValue_temp.length-2,2);
		}
		return WordToHexValue;
	}
	var x=Array();
	var k,AA,BB,CC,DD,a,b,c,d
	var S11=7, S12=12, S13=17, S14=22;
	var S21=5, S22=9 , S23=14, S24=20;
	var S31=4, S32=11, S33=16, S34=23;
	var S41=6, S42=10, S43=15, S44=21;
	// Steps 1 and 2.  Append padding bits and length and convert to words
	x = ConvertToWordArray(sMessage);
	// Step 3.  Initialise
	a = 0x67452301;
	b = 0xEFCDAB89;
	c = 0x98BADCFE;
	d = 0x10325476;
	// Step 4.  Process the message in 16-word blocks
	for (k=0;k<x.length;k+=16)
	{
		AA=a; BB=b; CC=c; DD=d;
		a=FF(a,b,c,d,x[k+0], S11,0xD76AA478);
		d=FF(d,a,b,c,x[k+1], S12,0xE8C7B756);
		c=FF(c,d,a,b,x[k+2], S13,0x242070DB);
		b=FF(b,c,d,a,x[k+3], S14,0xC1BDCEEE);
		a=FF(a,b,c,d,x[k+4], S11,0xF57C0FAF);
		d=FF(d,a,b,c,x[k+5], S12,0x4787C62A);
		c=FF(c,d,a,b,x[k+6], S13,0xA8304613);
		b=FF(b,c,d,a,x[k+7], S14,0xFD469501);
		a=FF(a,b,c,d,x[k+8], S11,0x698098D8);
		d=FF(d,a,b,c,x[k+9], S12,0x8B44F7AF);
		c=FF(c,d,a,b,x[k+10],S13,0xFFFF5BB1);
		b=FF(b,c,d,a,x[k+11],S14,0x895CD7BE);
		a=FF(a,b,c,d,x[k+12],S11,0x6B901122);
		d=FF(d,a,b,c,x[k+13],S12,0xFD987193);
		c=FF(c,d,a,b,x[k+14],S13,0xA679438E);
		b=FF(b,c,d,a,x[k+15],S14,0x49B40821);
		a=GG(a,b,c,d,x[k+1], S21,0xF61E2562);
		d=GG(d,a,b,c,x[k+6], S22,0xC040B340);
		c=GG(c,d,a,b,x[k+11],S23,0x265E5A51);
		b=GG(b,c,d,a,x[k+0], S24,0xE9B6C7AA);
		a=GG(a,b,c,d,x[k+5], S21,0xD62F105D);
		d=GG(d,a,b,c,x[k+10],S22,0x2441453);
		c=GG(c,d,a,b,x[k+15],S23,0xD8A1E681);
		b=GG(b,c,d,a,x[k+4], S24,0xE7D3FBC8);
		a=GG(a,b,c,d,x[k+9], S21,0x21E1CDE6);
		d=GG(d,a,b,c,x[k+14],S22,0xC33707D6);
		c=GG(c,d,a,b,x[k+3], S23,0xF4D50D87);
		b=GG(b,c,d,a,x[k+8], S24,0x455A14ED);
		a=GG(a,b,c,d,x[k+13],S21,0xA9E3E905);
		d=GG(d,a,b,c,x[k+2], S22,0xFCEFA3F8);
		c=GG(c,d,a,b,x[k+7], S23,0x676F02D9);
		b=GG(b,c,d,a,x[k+12],S24,0x8D2A4C8A);
		a=HH(a,b,c,d,x[k+5], S31,0xFFFA3942);
		d=HH(d,a,b,c,x[k+8], S32,0x8771F681);
		c=HH(c,d,a,b,x[k+11],S33,0x6D9D6122);
		b=HH(b,c,d,a,x[k+14],S34,0xFDE5380C);
		a=HH(a,b,c,d,x[k+1], S31,0xA4BEEA44);
		d=HH(d,a,b,c,x[k+4], S32,0x4BDECFA9);
		c=HH(c,d,a,b,x[k+7], S33,0xF6BB4B60);
		b=HH(b,c,d,a,x[k+10],S34,0xBEBFBC70);
		a=HH(a,b,c,d,x[k+13],S31,0x289B7EC6);
		d=HH(d,a,b,c,x[k+0], S32,0xEAA127FA);
		c=HH(c,d,a,b,x[k+3], S33,0xD4EF3085);
		b=HH(b,c,d,a,x[k+6], S34,0x4881D05);
		a=HH(a,b,c,d,x[k+9], S31,0xD9D4D039);
		d=HH(d,a,b,c,x[k+12],S32,0xE6DB99E5);
		c=HH(c,d,a,b,x[k+15],S33,0x1FA27CF8);
		b=HH(b,c,d,a,x[k+2], S34,0xC4AC5665);
		a=II(a,b,c,d,x[k+0], S41,0xF4292244);
		d=II(d,a,b,c,x[k+7], S42,0x432AFF97);
		c=II(c,d,a,b,x[k+14],S43,0xAB9423A7);
		b=II(b,c,d,a,x[k+5], S44,0xFC93A039);
		a=II(a,b,c,d,x[k+12],S41,0x655B59C3);
		d=II(d,a,b,c,x[k+3], S42,0x8F0CCC92);
		c=II(c,d,a,b,x[k+10],S43,0xFFEFF47D);
		b=II(b,c,d,a,x[k+1], S44,0x85845DD1);
		a=II(a,b,c,d,x[k+8], S41,0x6FA87E4F);
		d=II(d,a,b,c,x[k+15],S42,0xFE2CE6E0);
		c=II(c,d,a,b,x[k+6], S43,0xA3014314);
		b=II(b,c,d,a,x[k+13],S44,0x4E0811A1);
		a=II(a,b,c,d,x[k+4], S41,0xF7537E82);
		d=II(d,a,b,c,x[k+11],S42,0xBD3AF235);
		c=II(c,d,a,b,x[k+2], S43,0x2AD7D2BB);
		b=II(b,c,d,a,x[k+9], S44,0xEB86D391);
		a=AddUnsigned(a,AA);
		b=AddUnsigned(b,BB);
		c=AddUnsigned(c,CC);
		d=AddUnsigned(d,DD);
	}
	// Step 5.  Output the 128 bit digest
	var temp= WordToHex(a)+WordToHex(b)+WordToHex(c)+WordToHex(d);
	return temp.toLowerCase();
}