var msg=""
var count=1
var dtCh= "/";
var minYear=1900;
var maxYear=2100;
var winCust=null;

function checkLength(minl, maxl, stval, fieldname){
if(stval.length<minl || stval.length>maxl){
if(minl!=maxl){
msg=msg+count+". "+fieldname+" должен быть от "+minl+" до "+ maxl+" символов.\n"
}else{
msg=msg+count+". "+fieldname+" должен быть минимум "+minl+" символов.\n"
}
count++
return false
}else{
return true
}
}

function IsEmpty(stValue) {
if ((stValue.length==0) || (stValue==null)) {
return true;
}else { 
return false; 
}}

function validateZIP(field) {
var valid = "0123456789-";
var hyphencount = 0;

if (field.length!=5 && field.length!=10) {
msg=msg+count+". Please enter your 5 digit or 5 digit+4 zip code.\n"
count++
return false;
}
for (var i=0; i < field.length; i++) {
temp = "" + field.substring(i, i+1);
if (temp == "-") hyphencount++;
if (valid.indexOf(temp) == "-1") {
msg=msg+count+". Invalid characters in your zip code.\n"
count++
return false;
}
if ((hyphencount > 1) || ((field.length==10) && ""+field.charAt(5)!="-")) {
msg=msg+count+". The hyphen character should be used with a properly formatted 5 digit+four zip code, like '12345-6789'.\n"
count++
return false;
}
}
return true;
}

function isInteger(s){
var i;
for (i = 0; i < s.length; i++){   
var c = s.charAt(i);
if (((c < "0") || (c > "9"))) return false;
}
return true;
}

function stripCharsInBag(s, bag){
var i;
var returnString = "";
for (i = 0; i < s.length; i++){   
var c = s.charAt(i);
if (bag.indexOf(c) == -1) returnString += c;
}
return returnString;
}
 
function checknumber(nvalue){
var anum=/(^\d+$)|(^\d+\.\d+$)/
if (anum.test(nvalue))
testresult=true
else{
testresult=false
}
return (testresult)
}

function format (expr, decplaces) {
var str = "" + Math.round (eval(expr) * Math.pow(10,decplaces))
while (str.length <= decplaces) {
	str = "0" + str
}
var decpoint = str.length - decplaces
return str.substring(0,decpoint) + "." + str.substring(decpoint,str.length);
}

function dollarize (expr) {
return format(expr,2)
}


function emailCheck (emailStr, s_name) {
var checkTLD=1;
var knownDomsPat=/^(com|net|org|edu|int|mil|gov|arpa|biz|aero|name|coop|info|pro|museum)$/;
var emailPat=/^(.+)@(.+)$/;
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=emailStr.match(emailPat);

if (matchArray==null) {
msg=msg+count+". "+s_name+" E-mail указан неверно (проверьте @ и .).\n"
count++
return false;
}
var user=matchArray[1];
var domain=matchArray[2];

for (i=0; i<user.length; i++) {
if (user.charCodeAt(i)>127) {
msg=msg+count+". "+s_name+" E-mail содержит недопустимые символы.\n"
count++
return false;
}}
for (i=0; i<domain.length; i++) {
if (domain.charCodeAt(i)>127) {
msg=msg+count+". "+s_name+" E-mail содержит недопустимые символы.\n"
count++
return false;
}}

if (user.match(userPat)==null) {
msg=msg+count+". "+s_name+" E-mail содержит недопустимые символы.\n"
count++
return false;
}

var IPArray=domain.match(ipDomainPat);
if (IPArray!=null) {
for (var i=1;i<=4;i++) {
if (IPArray[i]>255) {
msg=msg+count+". "+s_name+" Destination IP address of the email is invalid.\n"
count++
return false;
}}
return true;
}
 
var atomPat=new RegExp("^" + atom + "$");
var domArr=domain.split(".");
var len=domArr.length;
for (i=0;i<len;i++) {
if (domArr[i].search(atomPat)==-1) {
msg=msg+count+". "+s_name+" E-mail указан неверно.\n"
count++
return false;
}}


if (checkTLD && domArr[domArr.length-1].length!=2 && 
domArr[domArr.length-1].search(knownDomsPat)==-1) {
msg=msg+count+". "+s_name+" Email address must end in a well-known domain or two letter " + "country.\n"
count++
return false;
}

if (len<2) {
msg=msg+count+". "+s_name+" Email address is missing a hostname!\n"
count++
return false;
}

return true;
}