function $() {
  var elements = new Array();
  for (var i = 0; i < arguments.length; i++) {
    var element = arguments[i];
    if (typeof element == 'string')
      element = document.getElementById(element);
    if (arguments.length == 1)
      return element;
    elements.push(element);
  }
  return elements;
}


	function check_fields()
	{	
		$('uname').value = trim($('uname').value);
		if ($('uname').value=='')
		{
			$('errName').innerHTML = '<font color=red>Please enter your Name<font>';
			return false;
		}
		if(isAlpha($('uname').value)==false)
   		{
     		$('errName').innerHTML = '<font color=red>Please enter letters only for your name<font>';
	 		return false;
   		}
		$('email').value = trim($('email').value);
		if ($('email').value=='')
		{
			$('errEmail').innerHTML = '<font color=red>Please enter your email<font>';
			return false;
		}
		
		if(validate_email($('email').value)==false)
   		{
     		$('errEmail').innerHTML = '<font color=red>Invalid Email Address<font>';
	 		return false;
   		}
		
	}
function trim (str)
{
   return str.replace(/^\s\s*/, '').replace(/\s\s*$/, '');
}


function isAlpha(field){
	var alphaEx = /^[A-Z\s]{3,20}$/i;
	if(field.match(alphaEx))
	{
		return true;
	}
	else
	{	
		return false;
	}
}

function validate_email(field){
	var emailEx = /^[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}$/i;
	if(field.match(emailEx))
	{
		return true;
	}
	else
	{
		return false;
	}
}