String.prototype.getBytes = function(){
   return this.replace(/[^\x00-\xff]/ig, 'zs').length;
}
function chemail(mail){
    var emailPattern = /^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/;
    return emailPattern.test(mail);
}
function replaceBlank(v){
   return v.replace(/ /g, ""); 
}
function ckint(g){
    var vArr = g.match(/^[0-9]+$/);
    if (vArr == null){
       return false;
    }else
    {  return true;
    }
}
function isEmpty(s) {
   var d = replaceBlank(s)
    if(d =="" || d.length ==0) {
      return true;
    }return false;
}
function ckpm(v,ho) {
    if (ckp(v)){
        ho.value = "";
        ho.value = v;
        return true;
    }else{
        alert('您选择的不是合法的图片文件,请重新选择');
        return false;
    }
}

function ckp(v) {
    var patn = /.jpg$|.jpeg$|.gif$|.png$/i;
    return patn.test(v)
}