// JavaScript Document

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}
function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}


function clearFieldUsername(field) {
	if (field.value=='username') field.value = '';
}

function resetFieldUsername(field) {
	if (field.value=='') field.value = 'username';
}
function clearFieldPassword(field) {
	if (field.value=='password') field.value = '';
}

function resetFieldPassword(field) {
	if (field.value=='') field.value = 'password';
}
function clearFieldSearch(field) {
	if (field.value=='search') field.value = '';
}

function resetFieldSearch(field) {
	if (field.value=='') field.value = 'search';
}
function clearFieldRequired(field) {
	if (field.value=='required') field.value = '';
}

function resetFieldRequired(field) {
	if (field.value=='') field.value = 'required';
}

function checkSearch() {
		if (document.search_form.search_field.value.length<=0||document.search_form.search_field.value=="Search the site") {
		  alert('You need to fill in your search criteria.');
		  return false;
		}
   
  return true;
}

function checkContactForm() {
		if (document.contact_form.first_name.value.length<=0||document.contact_form.first_name.value=="required") {
		  alert('Please fill in your name.');
		  return false;
		}
		if (document.contact_form.email.value.length<=0||document.contact_form.email.value=="required") {
		  alert('Please fill in your e-mail address.');
		  return false;
		}		
		if (document.contact_form.comments.value.length<=0||document.contact_form.comments.value=="required") {
		  alert('Please fill in your comments.');
		  return false;
		}				
   
  return true;
}

function checkLoginForm() {
		if (document.login_form.username.value.length<=0||document.login_form.username.value=="required") {
		  alert('Please fill in your username.');
		  return false;
		}
		if (document.login_form.password.value.length<=0||document.login_form.password.value=="required") {
		  alert('Please fill in your password.');
		  return false;
		}
		if (document.login_form.confirm_password.value.length<=0||document.login_form.confirm_password.value=="required") {
		  alert('Please fill in the confirmation of your password.');
		  return false;
		}
		if (document.login_form.password.value != document.login_form.confirm_password.value) {
		  alert('Your passwords do not match.');
		  return false;
		}
  return true;
}

function checkSurveyValues() {
		if (document.survey_form.first_name.value.length<=0||document.survey_form.first_name.value=="required") {
		  alert('Please fill in your name.');
		  return false;
		}
		if (document.survey_form.farm_name.value.length<=0||document.survey_form.farm_name.value=="required") {
		  alert('Please fill in your farm name.');
		  return false;
		}
		if (document.survey_form.district.value.length<=0||document.survey_form.district.value=="required") {
		  alert('Please fill in your district.');
		  return false;
		}
		if (document.survey_form.province.value.length<=0||document.survey_form.province.value=="required") {
		  alert('Please fill in your province.');
		  return false;
		}
		if (document.survey_form.email.value.length<=0||document.survey_form.email.value=="required") {
		  alert('Please fill in your email.');
		  return false;
		}		
		if (document.survey_form.username.value.length<=0||document.survey_form.username.value=="required") {
		  alert('Please fill in your username.');
		  return false;
		}
		if (document.survey_form.password.value.length<=0||document.survey_form.password.value=="required") {
		  alert('Please fill in your password.');
		  return false;
		}
		if (document.survey_form.confirm_password.value.length<=0||document.survey_form.confirm_password.value=="required") {
		  alert('Please confirm your password.');
		  return false;
		}
		if (document.survey_form.password.value != document.survey_form.confirm_password.value) {
		  alert('Your passwords do not match.');
		  return false;
		}       		
		if (document.survey_form.agree_terms.checked) {
		  return true; }
		else { 
		  alert('Please agree to the Terms Of Use by checking the checkbox.');
		  return false;
		}    
  return true;
}

function checkSubscribeValues() {
	if (document.subscription_form.first_name.value.length<=0||document.subscription_form.first_name.value=="required") {
		alert('Please fill in your name.');
		return false;
	}

	if (document.subscription_form.telephone.value.length<=0||document.subscription_form.telephone.value=="required") {
		alert('Please fill in your telephone number.');
		return false;
	}	
	
  if (document.subscription_form.email.value.length<=0||document.subscription_form.email.value=="required") {
		alert('Please fill in your email address.');
		return false;
	}	

	return true;
}