function trim(sString)
{
	while (sString.substring(0,1) == ' ')
	{
		sString = sString.substring(1, sString.length);
	}
	while (sString.substring(sString.length-1, sString.length) == ' ')
	{
		sString = sString.substring(0,sString.length-1);
	}
	return sString;
}

function checkCallback()
{
	//alert("hi");
	if(trim(document.getElementById("fname").value)=="")
	  {
		 alert("Please enter your first name");
		 document.getElementById("fname").focus();
		 return false;
	  }
	if(trim(document.getElementById("lname").value)=="")
	  {
		 alert("Please enter your last name");
		 document.getElementById("lname").focus();
		 return false;
	  }
	if(isNaN(document.getElementById("phone").value) || trim(document.getElementById("phone").value)=="")
	  {
		 alert("Please enter your Telefoonnummer");
		 document.getElementById("phone").focus();
		 return false;
	  }
	if(document.getElementById("call_date").value=="")
	  {
		 alert("Please enter Call Date");
		 document.getElementById("call_date").focus();
		 return false;
	  }
	if(trim(document.getElementById("comments").value)=="")
	  {
		 alert("Please enter Comments");
		 document.getElementById("comments").value="";
		 document.getElementById("comments").focus();
		 return false;
	  }

return true;
} 

function newsletterCheck()
{
	if(document.getElementById('name').value=='')
	{
		alert("Please enter name.");
		document.getElementById('name').value='';
		document.getElementById('name').focus();
		return false;
	}

	if(document.getElementById('email').value=='' || document.getElementById('email').value=='Register for our newsletter')
	{
		alert("Please enter email.");
		document.getElementById('email').value='';
		document.getElementById('email').focus();
		return false;
	}
	
	var em=document.getElementById('email').value;
	if(em.indexOf("@")==-1 || em.indexOf(".")==-1)
	{
		alert("Incorrect email format.");
		document.getElementById('email').focus();
		 return false;
	}
}