/**
 * @author Ben J Walker
 */


function showDateDescr(id)
{
	var descr = document.getElementById(id);
	
	if(descr.style.display=='' || descr.style.display=='none')
	{
		//hide others		
		
		//then show
		descr.style.display = 'block';
		descr.style.visibility = 'visible';	
	}
	else
	{
		descr.style.visibility = 'hidden';					
		descr.style.display = 'none';
			
	}
	

}



function closeNewsflash()
{
	newsflash = document.getElementById('newsflash');
	
	newsflash.style.visibility = 'hidden';					
	newsflash.style.display = 'none';	
	
}
	

function validate_contact_form()
{
    
    valid = true;

    if ( document.contact_form.form_name.value == "" || document.contact_form.message.value == ""  )
    {
        valid = false;
    }   

	apos = document.contact_form.email.value.indexOf("@");
	dotpos = document.contact_form.email.value.lastIndexOf(".");
	
	
	if (document.contact_form.email.value != "")
	{
		if (apos < 1 || dotpos - apos < 2) {
			valid = false;
		}
	}

	if(valid == false)       
	{
        alert ( "Please make sure you have provided your name and a message. If you have provided your email address please make sure it is valid." );		
	}
	   

    return valid;
	
}

function validate_login_form()
{
    
    valid = true;

    if ( document.login_form.username.value == "" || document.login_form.password.value == ""  )
    {
        valid = false;
    }   


	if(valid == false)       
	{
        alert ( "Please make sure you have provided your username and password." );		
	}
	   

    return valid;
	
}