function validEmail(email) 
{ 
    if (email == ""){return false;} 
    badStuff = ";:/,' \"\\"; 
     
    for (i=0; i<badStuff.length; i++) 
    { 
        badCheck = badStuff.charAt(i) 
        if (email.indexOf(badCheck,0) != -1){return false;} 
    } 

    posOfAtSign = email.indexOf("@",1) 
     
    if (posOfAtSign == -1){return false;} 

    if (email.indexOf("@",posOfAtSign+1) != -1){return false;} 
    posOfPeriod = email.indexOf(".", posOfAtSign) 
     
    if (posOfPeriod == -1){return false;} 
    if (posOfPeriod+2 > email.length){return false;} 
     
return true; 
} 



function validURL(url) 
{
	var regexp = /(ftp|http|https|HTTP|HTTPS|FTP):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
	return regexp.test(url);
}


function validName(url) 
{
	var regexp = /^[A-Za-z0-9]{3,250}$/
	
	if (IsEmpty(url)) return false;
	else
		return regexp.test(url);
}


function validTelephone(tel)
{
	
	var regexp = /^[\+|0-9]{1,20}[\.|\+|\-|0-9|\s]+$/
	
	if (IsEmpty(tel)) return false;
	else
		return regexp.test(tel);
}


function validateInt()
   {
      var o = document.frmInput.txtInput;
      switch (IsInteger(o.value))
      {
         case true:
            alert(o.value + " is an integer")
            break;
         case false:
            alert(o.value + " is not an integer")
      }
   }

   function validateRange()
   {
      var s = document.frmInput.txtInput.value;
      var A = document.frmInput.txtA.value;
      var B = document.frmInput.txtB.value;

      switch (isIntegerInRange(s, A, B))
      {
         case true:
            alert(s + " is in range from " + A + " to " + B)
            break;
         case false:
            alert(s + " is not in range from " + A + " to " + B)
      }
   }

// isIntegerInRange (STRING s, INTEGER a, INTEGER b)
   function isIntegerInRange (s, a, b)
   {   if (chkEmpty(s))
         if (isIntegerInRange.arguments.length == 1) return false;
         else return (isIntegerInRange.arguments[1] == true);

      // Catch non-integer strings to avoid creating a NaN below,
      // which isn't available on JavaScript 1.0 for Windows.
      if (!IsInteger(s, false)) return false;

      // Now, explicitly change the type to integer via parseInt
      // so that the comparison code below will work both on
      // JavaScript 1.2 (which typechecks in equality comparisons)
      // and JavaScript 1.1 and before (which doesn't).
      var num = parseInt (s);
      return ((num >= a) && (num <= b));
   }

   function IsInteger (s)
   {
      var i;

      if (chkEmpty(s))
      if (IsInteger.arguments.length == 1) return 0;
      else return (IsInteger.arguments[1] == true);

      for (i = 0; i < s.length; i++)
      {
         var c = s.charAt(i);

         if (!isDigit(c)) return false;
      }

      return true;
   }

   function chkEmpty(s)
   {
      return ((s == null) || (s.length == 0))
   }

   function isDigit (c)
   {
      return ((c >= "0") && (c <= "9"))
   }


   

	

function textCounter(field,cntfield,maxlimit) 
{
	if (field.value.length > maxlimit) // if too long...trim it!
		field.value = field.value.substring(0, maxlimit);
	else
		cntfield.value = maxlimit - field.value.length;
}



function IsEmpty(objWord)
{
	var blnIsEmpty = true;	
	var blnObjectPrm=false;
	var i=0;	
	var strWord='';
	var objThis;
	strWord = objWord;
	while(i<strWord.length && blnIsEmpty) {
		if (strWord.charAt(i)!=' ')
			blnIsEmpty=false;
		i++;
  	}
	if (blnIsEmpty)
	{
		return true;
	}
	else
	{
		return false;
	}
	
}


function validate_newsletter(frm)
{
	var errorstr = '';
	var msgstr = "There is a slight problem with your form submission.\nKindly provide us the missing or incorrect information enclosed below.\n\n";
	
	with(frm)
	{ 	
		if (!validEmail(email.value)) { errorstr += "- Please enter a valid email address.\n";}
		if (IsEmpty(name.value)) { errorstr += "- Please enter your name.\n";}
			
	}
	
	if (errorstr != ''){msgstr = msgstr + errorstr;alert(msgstr);return false;}
	else{return true;}	
}