function validateEmail(email){var reg=/^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;if(reg.test(email)==false){return false;}else{return true}}function checkemail(es){var emailPat=/^(.+)@(.+)$/;var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
	var validChars		= "\[^\\s" + specialChars + "\]";
	var quotedUser		= "(\"[^\"]*\")";var ipDomainPat=/^\[(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})\]$/;var atom=validChars+'+';var word="("+atom+"|"+quotedUser+")";var userPat=new RegExp("^"+word+"(\\."+word+")*$");var domainPat=new RegExp("^"+atom+"(\\."+atom+")*$");var matchArray=es.match(emailPat);if(matchArray==null){return false;}var user=matchArray[1];var domain=matchArray[2];if(user.match(userPat)==null){return false;}var IPArray=domain.match(ipDomainPat);if(IPArray!=null){for(var i=1;i<=4;i++){if(IPArray[i]>255){return false;}}return true;}var domainArray=domain.match(domainPat);if(domainArray==null){return false;}var atomPat=new RegExp(atom,"g");var domArr=domain.match(atomPat);var len=domArr.length;if(domArr[domArr.length-1].length<2||domArr[domArr.length-1].length>3){return false;}if(len<2){return false;}return true;}function chkNum(s){var regP=new RegExp("[^0-9]");if(s.match(regP)==null){return 1;}return 0;}function cKFV(v,n){return(v.length-n);}