function disabledTagById(el, disabledTags){
    for(var i=0; i<el.childNodes.length; i++){
        if(el.childNodes[i].hasChildNodes()) disabledTagById(el.childNodes[i],disabledTags);
        disabledTags = (disabledTags==undefined) ? ['input'] : disabledTags ; // ['input', 'textarea']
        reg = new RegExp('^(' + disabledTags.join('|') + ')$', 'i');
        if(reg.test(String(el.childNodes[i].tagName))){
            el.childNodes[i].disabled = true;
        }else if(String(el.childNodes[i].tagName).toLowerCase() == "select"){
            if(el.childNodes[i].multiple==true){
                el.childNodes[i].onChange = "";
                el.childNodes[i].onchange = "";
            }else{
                el.childNodes[i].disabled = true;
            }
        }
    }
    return false;
}

function isitInteger(str)
{
	var result = true;

	for (var i = 0; i< str.length; i++)
	{
		if ("0" > str.charAt(i) || "9" < str.charAt(i))
		{
			result = false;
		}
	}
	return result;
}

function isitDouble(str)
{
	var result = true;
	if (result == true)
	{
		var float_result = str.split(".");
		if (float_result.length > 2)
		{
			result = false;
		}
		else
		{
			for (var i = 0; i < float_result.length; i++)
			{
				if (!isitInteger(float_result[i]))
				{
					result = false;
				}
			}
		}
	}
	return result;
}

function LTrim(str)
/*
   PURPOSE: Remove leading blanks from our string.
   IN: str - the string we want to LTrim
*/
{
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(0)) != -1) {
      // We have a string with leading blank(s)...

      var j=0, i = s.length;

      // Iterate from the far left of string until we
      // don't have any more whitespace...
      while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
         j++;

      // Get the substring from the first non-whitespace
      // character to the end of the string...
      s = s.substring(j, i);
   }
   return s;
}

function RTrim(str)
/*
   PURPOSE: Remove trailing blanks from our string.
   IN: str - the string we want to RTrim

*/
{
   // We don't want to trip JUST spaces, but also tabs,
   // line feeds, etc.  Add anything else you want to
   // "trim" here in Whitespace
   var whitespace = new String(" \t\n\r");

   var s = new String(str);

   if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
      // We have a string with trailing blank(s)...

      var i = s.length - 1;       // Get length of string

      // Iterate from the far right of string until we
      // don't have any more whitespace...
      while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
         i--;


      // Get the substring from the front of the string to
      // where the last non-whitespace character is...
      s = s.substring(0, i+1);
   }

   return s;
}

function Trim(str)
/*
   PURPOSE: Remove trailing and leading blanks from our string.
   IN: str - the string we want to Trim

   RETVAL: A Trimmed string!
*/
{
   return RTrim(LTrim(str));
}

function validateMobileNo(mobile)
{
    var result = 0;
    if(mobile == '') {
        result = 1;
    } else {
        if (!isitInteger(mobile)) {
            result = 2;
        } else {
            if (mobile.length < 7) {
                result = 3;
            } else {
                if (mobile.length > 20) {
                    result = 4;
                }
            }
        }
    }
    return result;
}

function validateEmailAddress(email_address)
{
    var result = false;
    var idx1 = 0;
    var idx2 = 0;

    for (var i=0; i<email_address.length; i++) {
        if ('@' == email_address.charAt(i)) {
            result = true;
            idx1 = i;
        }

        if('.' == email_address.charAt(i)) {
            idx2 = i;
        }
    }

    if (result == false || idx1 > idx2) {
        return false;
    } else {
        return true;
    }
}