// JavaScript Document
//function to check the zip code
function IsZip(snum){
	var reZip = /^(\d{5})$/
    return reZip.test(snum)
}
//function to check whether the variable is empty
function isEmpty(s){
	return ((s == null) || (s.length == 0)|| (s.substr(0,1) == " "))
}

function IsInteger(snum){
   var reInteger=/^\d+$/ ;
   return reInteger.test(snum);
}

function validemail(emailStr)
{	
	var err=0;
	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) {
		
		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 IsNumeric(strString)
   //  check for valid numeric strings	
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;

   //  test strString consists of valid characters listed above
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }