String.prototype.len = function()   
{   
   return   this.replace(/[^\x00-\xff]/g,"**").length;
}  

String.prototype.IsDate = function() {

var str = this;
var reg = /^(\d+)-(\d{1,2})-(\d{1,2})$/;
var r = str.match(reg);
if (r == null) return false;
r[2] = r[2] - 1;
var d = new Date(r[1], r[2], r[3]);
if (d.getFullYear() != r[1]) return false;
if (d.getMonth() != r[2]) return false;
if (d.getDate() != r[3]) return false;
return true; 

//	var myReg = /^(\d{4})(-|\/|.)(\d{1,2})\2(\d{1,2})$/; 
//	var result=this.match(myReg);
//    if(result==null) return false;
//	var test= new Date(result[1],result[3]-1,result[4]);
//	if ((test.getFullYear()==result[1]) && (test.getMonth()+1==result[3]) && (test.getDate()==result[4])){
//		ActRs.Clear();
//		ActRs[0]=result[1];ActRs[1]=result[3];ActRs[2]=result[4];
//		return true;
//	}
//	else return false;
}

 


String.prototype.IsTime = function()
{
	var myReg = /^(\d{1,2})(:)(\d{1,2})\2(\d{1,2})$/; 
	var result=this.match(myReg);
    if(result==null) return false;
	var test= new Date(2000,1,1,result[1],result[3],result[4]);
	if ((test.getHours()==result[1]) && (test.getMinutes()==result[3]) && (test.getSeconds()==result[4])){
		ActRs[3]=result[1];ActRs[4]=result[3];ActRs[5]=result[4];
		return true;
	}
	else return false;
}

String.prototype.IsDateTime = function()
{
	var myReg = this.split(" ");
	if(myReg.length!=2) return false;
	if(myReg[0].IsDate() && myReg[1].IsTime()) return true;
	return false;
}

String.prototype.IsEmail = function()
{
	myReg = /^[_a-zA-Z0-9\-]+(\.[_a-zA-Z0-9\-]*)*@[a-zA-Z0-9\-]+([\.][a-zA-Z0-9\-]+)+$/;
	if (myReg.test(this)){
	    return true;
	}else{
		return false;
	}
	
}

String.prototype.IsIdcard = function()
{
    var myReg = /^[1-9][0-9]{14}$|^[1-9][0-9]{16}[0-9a-zA-Z]$/;
	if(myReg.test(this)) return true;
    return false;
}

String.prototype.IsNumber = function()
{
	var myReg = /^[0-9]+$/;
	if(!myReg.test(this)) return false;
	ActRd=parseInt(this)	
	return true;
}

String.prototype.IsFloat = function()
{
	var myReg = /^[0-9.]+$/;
	if(!myReg.test(this)) return false;
	var pos=this.indexOf('.')
	if(pos==-1) return false;
	if(pos!=this.lastIndexOf('.')) return false;
	if(pos==0 || (pos+1)==this.length) return false;
	ActRd=parseFloat(this)
	return true;
}

String.prototype.IsPhone = function()
{
	if(!this.IsNumber()) return false;
	if(this.length != 11 || this<13000000000 || this>19999999999) return false;
	return true;
}


String.prototype.IsEn = function()
{
    var myReg = /^[a-zA-Z]+$/;
    if(myReg.test(this)) return true;
    return false;
}

String.prototype.IsCn = function()
{
    var ch,temp,isCN,isTrue;
    isTrue = true;
    for(var i=0;i<this.length;i++)
    {
        ch = this.substring(i,i+1);
        temp = escape(ch);
        isCN = (temp.length == 6)? true:false;
        if(!isCN)
        {
            isTrue = false;
            break;
        }
    }
    return isTrue;
}


String.prototype.Trim = function()
{
	return this.replace(/(^\s*)|(\s*$)/g, "");
}

String.prototype.Left = function(n)
{
	return strLeft(this,n);
}

String.prototype.Right = function(n)
{
	return strRight(this,n);
}

String.prototype.Len = function()
{
	var len=0;
	for (var i=0;i<this.length;i++){
		if (this.charCodeAt(i)>255) len+=2; 
		else len++;
	}
	return len;
}



String.prototype.Escape = function()
{
	return escape(this);
}

String.prototype.UnEscape = function()
{
	return unescape(this);
}

String.prototype.UrlEncode = function()
{
	var i,c,p,q,ret="",strSpecial="!\"#$%&'()*+,/:;<=>?@[\]^`{|}~%";
	for(i=0;i<this.length;i++){
		if(this.charCodeAt(i)>=0x4e00){
			var p=GBStr.indexOf(this.charAt(i));
			if(p>=0){
				q=p%94;
				p=(p-q)/94;
				ret+=("%"+(0xB0+p).toString(16)+"%"+(0xA1+q).toString(16)).toUpperCase();
			}
		}
		else{
			c=this.charAt(i);
			if(c==" ")
				ret+="+";
			else if(strSpecial.indexOf(c)!=-1)
				ret+="%"+this.charCodeAt(i).toString(16);
			else
				ret+=c;
		}
	}
	return ret;
}


String.prototype.toInt = function()
{
	
	return parseInt(this);
}

String.prototype.toFloat = function()
{
	
	return parseFloat(this);
}

String.prototype.toHex = function(){
	if(!this.IsNumber()) return "";
	var x=parseInt(this);
    var out = "";
    var remainder;
    while (x > 0){
        remainder = x % 16;
        if (remainder < 10){
            out = remainder + out;
        } else if (remainder == 10){
            out = "a" + out;
        } else if (remainder == 11){
            out = "b" + out;
        } else if (remainder == 12){
            out = "c" + out;
        } else if (remainder == 13){
            out = "d" + out;
        } else if (remainder == 14){
            out = "e" + out;
        } else if (remainder == 15){
            out = "f" + out;
        }
        x = Math.floor(x / 16);
    }
    return out;
}

String.prototype.toDate = function()
{
	ActRs.Clear();
	this.IsDate();
	return new Date(ActRs[0],ActRs[1]-1,ActRs[2]);
}

String.prototype.toSpell = function(sp)
{
	var i,t,p,ret="";
	if(sp==null) sp="";
	for(i=0;i<this.length;i++){
		if(this.charCodeAt(i)>=0x4e00){
			p=GBStr.indexOf(this.charAt(i));
			if(p>-1 && p<3755){
				for(t=GBSpell.length-1;t>0;t=t-2) 
					if(GBSpell[t]<=p) break;
				if(t>0)
					ret+=GBSpell[t-1]+sp;
			}
		}
		else ret+=this.charAt(i)+sp;
	}
	return ret.substr(0,ret.length-sp.length);
}



String.prototype.Count = function(){
    var out = new Array(256);
    for (var i = 0; i < this.length; i++){
        if (out[this.charCodeAt(i)] == undefined){
            out[this.charCodeAt(i)] = 1;
        } else {
            out[this.charCodeAt(i)]++;
        }
    }
    return out;
}

/********************************** chinese ***************************************/
/**
*校验字符串是否为中文
*返回值：
*如果为空，定义校验通过，           返回true
*如果字串为中文，校验通过，         返回true
*如果字串为非中文，             返回false    参考提示信息：必须为中文！
*/
function checkIsChinese(str) {
    //如果值为空，通过校验
    if (str == "")
        return true;
    var pattern = /^([\u4E00-\u9FA5]|[\uFE30-\uFFA0])*$/gi;
    if (pattern.test(str))
        return true;
    else
        return false;
} //~