// JavaScript Document
function validate_required(field,alerttxt)
{
	with (field)
	{
  		if (value==null||value=="")
  		{
  			alert(alerttxt);return false;
  		}
  		else
  		{
  			return true;
  		}
	}
}

function validate_email(field,alerttxt)
{
	with (field)
	{
		apos=value.indexOf("@");
		dotpos=value.lastIndexOf(".");
		if (apos<1||dotpos-apos<2) 
  		{alert(alerttxt);return false;}
		else {return true;}
	}
}

function validate_form(thisform)
{
	with (thisform)
	{
		if (validate_required(f_name,"Your first name is required.")==false)
		  {f_name.focus();return false;}
		  
		if (validate_required(l_name,"Your last name is required.")==false)
		  {l_name.focus();return false;}  
		
		if (validate_required(email,"Your email address is required.")==false)
		  {email.focus();return false;}		  
		
		if (validate_required(submitted_message,"Please enter your message.")==false)
		  {submitted_message.focus();return false;} 
		
		if (validate_email(email,"Please check your e-mail address for errors.")==false)
  		  {email.focus();return false;}
	}
}