function clearText(thefield)
{
	if (thefield.defaultValue == thefield.value) 
		thefield.value = "";
} 

function replaceText(thefield)
{
	if (thefield.value == "") 
		thefield.value = thefield.defaultValue;
}


function ValidateDataSmall()
{ 
	var element = document.getElementById('FirstName');
	if (element.value == "")
	{
		alert('Please, enter your First Name.');
		element.focus();
		return false;
	}
	element = document.getElementById('LastName');
	if (element.value == "")
	{
		alert('Please, enter your Last Name.');
		element.focus();
		return false;
	}

	element = document.getElementById('Email');
	if (element.value == "")
	{
		alert('Please, enter your Email address.');
		element.focus();
		return false;
	}
	else
	{
		if(!ValidateEmail(element.value))
		{
			alert("Please check the Email address");
			element.focus();
			return false;
		}
	}

	element = document.getElementById('Comment');
	if (element.value == "")
	{
		alert('Please, enter your comments.');
		element.focus();
		return false;
	}	
	return true;
}
function ValidateDataContact()
{
	
	
	var element = document.getElementById('txtName');
	if (element.value == "")
	{
		alert('Please, enter your First Name.');
		element.focus();
		return false;
	}
	/*element = document.getElementById('txtLastName');
	if (element.value == "")
	{
		alert('Please, enter your Last Name.');
		element.focus();
		return false;
	}*/

	element = document.getElementById('txtEmail');
	if (element.value == "")
	{
		alert('Please, enter your E-mail Address:.');
		element.focus();
		return false;
	}
	else
	{
		if(!ValidateEmail(element.value))
		{
			alert("Please check the E-mail Address.");
			element.focus();
			return false;
		}
	}

	/*element = document.getElementById('txtPhone');
	if (element.value == "")
	{
		alert('Please, enter your Phone Number.');
		element.focus();
		return false;
	}
	*/
	element = document.getElementById('txtComments');
	if (element.value == "")
	{
		alert('Please, enter your comments.');
		element.focus();
		return false;
	}	
	return true;
}

function ValidateEmail(valor) 
{
  if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(valor))
     return true;
  else
     return false;
}