function BHon(obj){
		$(obj).fade('.7');
}
function BHoff(obj){
		$(obj).fade('in');
}

function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages() {
    preloadFlag = true;
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}


function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}
var preloadFlag = false;




function preloadImages() {
  if (document.images) {
    home_on = newImage("images/home_.gif");
    location_on = newImage("images/location_.gif");
    accommodation_on = newImage("images/accommodation_.gif");
    availability_on = newImage("images/availability_.gif");
    prices_on = newImage("images/prices_.gif");
    enquiry_on = newImage("images/enquiry_.gif");    
    preloadFlag = true;
  }
}

function validate_email(val)
{
  apos=val.indexOf("@");
  dotpos=val.lastIndexOf(".");
  if (apos<1 || dotpos-apos<2)
    {return false;}
  else {return true;}
}

function ValidateContactForm() {
	var nameerr="";
	var emailerr="";

	if (document.contact_form.e_clientname.value=="" ) nameerr="Please complete name field.\n";
	if (document.contact_form.e_email.value=="" || validate_email(document.contact_form.e_email.value)==false) emailerr="Please enter correct e-mail address.\n";
		if (nameerr!="" || emailerr!="") {
			alert ('All fields marked with * are required!\n'+nameerr+emailerr);
			return false;
		}
	else {
		document.contact_form.submit(); 
	}
}