function ContactUsValidation()
{
	var Name = document.getElementById('textfield1');
	var Email = document.getElementById('textfield3');
	var ErrorMessage = '';
	
	if(isEmpty(Name))
        ErrorMessage += 'Please enter your Name';
	
	if(emailValidator(Email) == false)
        ErrorMessage += '\nPlease enter your valid email address';
        
	if(ErrorMessage == '')
	    return true;
	else
	{
	    alert(ErrorMessage);
	    return false;
	}
}

function HotTopicValidation()
{
	var Name = document.getElementById('txtName');
	var Email = document.getElementById('txtEmail');
	var ErrorMessage = '';
	
	if(isEmpty(Name))
        ErrorMessage += 'Please enter your Name';
	
	if(emailValidator(Email) == false)
        ErrorMessage += '\nPlease enter your valid email address';
						
	if(ErrorMessage == '')
	    return true;
	else
	{
	    alert(ErrorMessage);
	    return false;
	}
}

function isEmpty(elem)
{
	if(elem.value.length == 0)
		return true;
	else
	    return false;
}

function isAlphabet(elem)
{
	var alphaExp = /^[a-zA-Z]+$/;
	if(elem.value.match(alphaExp))
		return true;
	else
		return false;
}

function emailValidator(elem)
{
	var emailExp = /^[\w\-\.\+]+\@[a-zA-Z0-9\.\-]+\.[a-zA-z0-9]{2,4}$/;
	if(elem.value.match(emailExp))
		return true;
	else
		return false;
}

function isNumeric(elem, helperMsg){
	var numericExpression = /^[0-9]+$/;
	if(elem.value.match(numericExpression)){
		return true;
	}else{
		alert(helperMsg);
		elem.focus();
		return false;
	}
}