/**
 * 判断字符串emailAddr是否为合法的email格式
 * @return true/false。
 */
function emailCheck(email)
{
	reg=/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/;
	if(reg.test(jsTrim(email)))
	{return true;}
	return false;
}

/*
 ********************百家姓*********************
 *@param str [姓]value
 */
function check_surname(str)
{ 
 var x=str.substr(0,1); //截取用户提交的用户名的前两字节，也就是姓。 
 var surname="赵,钱,孙,李,周,吴,郑,王,冯,陈,褚,卫,";
     surname+="蒋,沈,韩,杨,朱,秦,尤,许,何,吕,施,张,";
     surname+="孔,曹,严,华,金,魏,陶,姜,戚,谢,邹,喻,";
     surname+="柏,水,窦,章,云,苏,潘,葛,奚,范,彭,郎,";
     surname+="鲁,韦,昌,马,苗,凤,花,方,俞,任,袁,柳,";
     surname+="酆,鲍,史,唐,费,廉,岑,薛,雷,贺,倪,汤,";
     surname+="滕,殷,罗,毕,郝,邬,安,常,乐,于,时,傅,";
     surname+="皮,卞,齐,康,伍,余,元,卜,顾,孟,平,黄,";
     surname+="和,穆,萧,尹,姚,邵,湛,汪,祁,毛,禹,狄,";
     surname+="米,贝,明,臧,计,伏,成,戴,谈,宋,茅,庞,";
     surname+="熊,纪,舒,屈,项,祝,董,梁,杜,阮,蓝,闵,";
     surname+="席,季,麻,强,贾,路,娄,危,江,童,颜,郭,";
     surname+="梅,盛,林,刁,锺,徐,邱,骆,高,夏,蔡,田,";
     surname+="樊,胡,凌,霍,虞,万,支,柯,昝,管,卢,莫,";
     surname+="经,房,裘,缪,干,解,应,宗,丁,宣,贲,邓,";
     surname+="郁,单,杭,洪,包,诸,左,石,崔,吉,钮,龚,";
     surname+="程,嵇,邢,滑,裴,陆,荣,翁,荀,羊,於,惠,";
     surname+="甄,麴,家,封,芮,羿,储,靳,汲,邴,糜,松,";
     surname+="井,段,富,巫,乌,焦,巴,弓,牧,隗,山,谷,";
     surname+="车,侯,宓,蓬,全,郗,班,仰,秋,仲,伊,宫,";
     surname+="宁,仇,栾,暴,甘,钭,历,戎,祖,武,符,刘,";
     surname+="景,詹,束,龙,叶,幸,司,韶,郜,黎,蓟,溥,";
     surname+="印,宿,白,怀,蒲,邰,从,鄂,索,咸,籍,赖,";
     surname+="卓,蔺,屠,蒙,池,乔,阳,郁,胥,能,苍,双,";
     surname+="闻,莘,党,翟,谭,贡,劳,逄,姬,申,扶,堵,";
     surname+="冉,宰,郦,雍,却,璩,桑,桂,濮,牛,寿,通,";
     surname+="边,扈,燕,冀,僪,浦,尚,农,温,别,庄,晏,";
     surname+="柴,瞿,阎,充,慕,连,茹,习,宦,艾,鱼,容,";
     surname+="向,古,易,慎,戈,廖,庾,终,暨,居,衡,步,";
     surname+="都,耿,满,弘,匡,国,文,寇,广,禄,阙,东,";
     surname+="欧,殳,沃,利,蔚,越,夔,隆,师,巩,厍,聂,";
     surname+="晁,勾,敖,融,冷,訾,辛,阚,那,简,饶,空,";
     surname+="曾,毋,沙,乜,养,鞠,须,丰,巢,关,蒯,相,";
     surname+="查,后,荆,红,游,竺,权,逮,盍,益,桓,公,";
     surname+="万俟,司马,上官,欧阳,夏侯,诸葛,闻人,东方,赫连,皇甫,尉迟,公羊,";
     surname+="澹台,公冶,宗政,濮阳,淳于,单于,太叔,申屠,公孙,仲孙,轩辕,令狐,";
     surname+="钟离,宇文,长孙,慕容,司徒,司空,召,有,舜,叶赫那拉,丛,岳,";
     surname+="寸,贰,皇,侨,彤,竭,端,赫,实,甫,集,象,";
     surname+="翠,狂,辟,典,良,函,芒,苦,其,京,中,夕,";
     surname+="之,章佳,那拉,冠,宾,香,果,依尔根觉罗,依尔觉罗,萨嘛喇,赫舍里,额尔德特,";
     surname+="萨克达,钮祜禄,他塔喇,喜塔腊,讷殷富察,叶赫那兰,库雅喇,瓜尔佳,舒穆禄,爱新觉罗,索绰络,纳喇,";
     surname+="乌雅,范姜,碧鲁,张廖,张简,图门,太史,公叔,乌孙,完颜,马佳,佟佳,";
     surname+="富察,费莫,蹇,称,诺,来,多,繁,戊,朴,回,毓,";
     surname+="税,荤,靖,绪,愈,硕,牢,买,但,巧,枚,撒,";
     surname+="泰,秘,亥,绍,以,壬,森,斋,释,奕,姒,朋,";
     surname+="求,羽,用,占,真,穰,翦,闾,漆,贵,代,贯,";
     surname+="旁,崇,栋,告,休,褒,谏,锐,皋,闳,在,歧,";
     surname+="禾,示,是,委,钊,频,嬴,呼,大,威,昂,律,";
     surname+="冒,保,系,抄,定,化,莱,校,么,抗,祢,綦,";
     surname+="悟,宏,功,庚,务,敏,捷,拱,兆,丑,丙,畅,";
     surname+="苟,随,类,卯,俟,友,答,乙,允,甲,留,尾,";
     surname+="佼,玄,乘,裔,延,植,环,矫,赛,昔,侍,度,";
     surname+="旷,遇,偶,前,由,咎,塞,敛,受,泷,袭,衅,";
     surname+="叔,圣,御,夫,仆,镇,藩,邸,府,掌,首,员,";
     surname+="焉,戏,可,智,尔,凭,悉,进,笃,厚,仁,业,";
     surname+="肇,资,合,仍,九,衷,哀,刑,俎,仵,圭,夷,";
     surname+="徭,蛮,汗,孛,乾,帖,罕,洛,淦,洋,邶,郸,";
     surname+="郯,邗,邛,剑,虢,隋,蒿,茆,菅,苌,树,桐,";
     surname+="锁,钟,机,盘,铎,斛,玉,线,针,箕,庹,绳,";
     surname+="磨,蒉,瓮,弭,刀,疏,牵,浑,恽,势,世,仝,";
     surname+="同,蚁,止,戢,睢,冼,种,涂,肖,己,泣,潜,";
     surname+="卷,脱,谬,蹉,赧,浮,顿,说,次,错,念,夙,";
     surname+="斯,完,丹,表,聊,源,姓,吾,寻,展,出,不,";
     surname+="户,闭,才,无,书,学,愚,本,性,雪,霜,烟,";
     surname+="寒,少,字,桥,板,斐,独,千,诗,嘉,扬,善,";
     surname+="揭,祈,析,赤,紫,青,柔,刚,奇,拜,佛,陀,";
     surname+="弥,阿,素,长,僧,隐,仙,隽,宇,祭,酒,淡,";
     surname+="塔,琦,闪,始,星,南,天,接,波,碧,速,禚,";
     surname+="腾,潮,镜,似,澄,潭,謇,纵,渠,奈,风,春,";
     surname+="濯,沐,茂,英,兰,檀,藤,枝,检,生,折,登,";
     surname+="驹,骑,貊,虎,肥,鹿,雀,野,禽,飞,节,宜,";
     surname+="鲜,粟,栗,豆,帛,官,布,衣,藏,宝,钞,银,";
     surname+="门,盈,庆,喜,及,普,建,营,巨,望,希,道,";
     surname+="载,声,漫,犁,力,贸,勤,革,改,兴,亓,睦,";
     surname+="修,信,闽,北,守,坚,勇,汉,练,尉,士,旅,";
     surname+="五,令,将,旗,军,行,奉,敬,恭,仪,母,堂,";
     surname+="丘,义,礼,慈,孝,理,伦,卿,问,永,辉,位,";
     surname+="让,尧,依,犹,介,承,市,所,苑,杞,剧,第,";
     surname+="零,谌,招,续,达,忻,六,鄞,战,迟,候,宛,";
     surname+="励,粘,萨,邝,覃,辜,初,楼,城,区,局,台,";
     surname+="原,考,妫,纳,泉,老,清,德,卑,过,麦,曲,";
     surname+="竹,百,福,言,第五,佟,爱,年,笪,谯,哈,墨,";
     surname+="南宫,赏,伯,佴,佘,牟,商,西门,东门,左丘,梁丘,琴,";
     surname+="后,况,亢,缑,帅,微生,羊舌,海,归,呼延,南门,东郭,";
     surname+="百里,钦,鄢,汝,法,闫,楚,晋,谷梁,宰父,夹谷,拓跋,";
     surname+="壤驷,乐正,漆雕,公西,巫马,端木,颛孙,子车,督,仉,司寇,亓官,";
     surname+="鲜于,锺离,盖,逯,库,郏,逢,阴,薄,厉,稽,闾丘,";
     surname+="公良,段干,开,光,操,瑞,眭,泥,运,摩,伟,铁,";
     surname+="迮,凡,付";
  r = surname.search(x);            // 查找字符串。
  if(r==-1){
   return false;}
  else{ 
   return true;}
 }