function LTrim(str)
{
  var whitespace = new String(" \t\n\r");
  var s = new String(str);
  if (whitespace.indexOf(s.charAt(0)) != -1) {
    var j=0, i = s.length;
    while (j < i && whitespace.indexOf(s.charAt(j)) != -1)
    j++;
    s = s.substring(j, i);
  }
  return s;
}

function RTrim(str)
{
  var whitespace = new String(" \t\n\r");
  var s = new String(str);
  if (whitespace.indexOf(s.charAt(s.length-1)) != -1) {
    var i = s.length - 1;       // Get length of string
    while (i >= 0 && whitespace.indexOf(s.charAt(i)) != -1)
      i--;
    s = s.substring(0, i+1);
  }
  return s;
}

function Trim(str)
{
  return RTrim(LTrim(str));
}


function emailValidate(str) { 
	var emailfilter2=/^\w+[\+\.\w-]*@([\w-]+\.)*\w+[\w-]*\.([a-z]{2,4}|\d+)$/i
	return emailfilter2.test(Trim(str));			
}


(function($) {
$.clearForm   = function(opts) { 
		return $(opts.typ).each(function() {
		var type = this.type, tag = this.tagName.toLowerCase();
		if (tag == 'form')
		  return $.clearForm({typ:':input'});
		if (type == 'text' || type == 'password' || tag == 'textarea')
		  this.value = '';
		else if (type == 'checkbox' || type == 'radio')
		  this.checked = false;
		else if (tag == 'select')
		  this.selectedIndex = 0;
	  });
};

})(jQuery);