var currentdate = 0
var core = 0

function StringArray (n) {
  this.length = n;
  for (var i =1; i <= n; i++) {
    this[i] = ' '

  }
}

image = new StringArray(15)
image[0] = 'm_123_graffiti'
image[1] = 'm_books'
image[2] = 'm_building'
image[3] = 'm_cyclist'
image[4] = 'm_fist'
image[5] = 'm_graffiti'
image[6] = 'm_iceberg'
image[7] = 'm_krill'
image[8] = 'm_market'
image[9] = 'm_montage'
image[10] = 'm_nail_wood'
image[11] = 'm_one_man_band'
image[12] = 'm_statue'
image[13] = 'm_water'
image[14] = 'm_widgets'

var ran = image.length

function randomImage() {
	
  core = Math.round(Math.random()*(ran-1))
    return(image[core])
}




function showImage(){
 		document.write("<img src='images/" +randomImage()+ ".jpg' width='173' height='384' align='top' alt='Thinking Sustainable Development' />")

}





function isEmailAddr(email)
{
  var result = false;
  var theStr = new String(email);
  var index = theStr.indexOf("@");
  if (index > 0)
  {
    var pindex = theStr.indexOf(".",index);
    if ((pindex > index+1) && (theStr.length > pindex+1))
	result = true;
  }
  return result;
}

function validRequired(formField,fieldLabel)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert('Please enter a value for the "' + fieldLabel +'" field.');
		formField.focus();
		result = false;
	}
	
	return result;
}

function validRequired2(formField,error_message)
{
	var result = true;
	
	if (formField.value == "")
	{
		alert(error_message);
		formField.focus();
		result = false;
	}
	
	return result;
}

function validEmail(formField,fieldLabel,required)
{
	var result = true;
	
	if (required && !validRequired(formField,fieldLabel))
		result = false;

	if (result && ((formField.value.length < 3) || !isEmailAddr(formField.value)) )
	{
		alert("Please enter a complete email address in the form: yourname@yourdomain.com");
		formField.focus();
		result = false;
	}
   
  return result;

}

function permissioncheckbox(formfield,fieldlabel)
{

   if (formfield.checked)
   {
   return true;
   }
   else
   {
   alert ("You will need to tick the Data Protection checkbox to give us permission to proceed with the quote.");
   formField.focus();
   return false;
   }
}

function validlist(formField,error_message)
{
	var result = true;
	
	if (formField.value == "0")
	{
		alert(error_message);
		result = false;
	}
	
	return result;
}


 
//-----------------------------------------------------------------------------------------------------------------------------------------


function validateRequestForm(theForm)
{
	if (!validRequired(theForm.name,"Name"))
		return false;

	if (!validEmail(theForm.email,"Email Address",false))
		return false;
		
		if (!validRequired(theForm.message,"message"))
		return false;
	
	return true;
	
}