// JavaScript Document
 $(document).ready(function() {
// do stuff when DOM is ready

        //h1 image replacement
        
       /* $('h1').each(function() {
      string = $(this).text();
      filename = string.toLowerCase().replace(/ /g, '-').replace(/([^0-9a-z-])/g,'');
      $(this).html('<img src="/cmsimages/title-' + filename + '.gif" alt="' + string + '" />');
    }); 
    */
 
	//topnav image replacement
	
	$('#headernav ul.navtop li a').each(function() {
      string = $(this).text();
      filename = string.toLowerCase().replace(/ /g, '-').replace(/([^0-9a-z-])/g,'');
      $(this).html('<img src="cmsimages/nav-' + filename + '.gif" alt="' + string + '" />');
      $(this).css({height: '17px', overflow: 'hidden'});
      $(this).children('img').css({marginTop: '-26px'});
      
      $(this).hover(function(){
      	thismargin = $(this).children('img').css("margin-top");
      	$(this).children('img').css({marginTop: '6px'});
      },
      function(){
      	$(this).children('img').css({marginTop: thismargin});
      });
    });
    
    $('#headernav ul.navtop li.selected a img').css({marginTop: '6px'});

  	//load homepage carousel
	$('.infiniteCarousel').infiniteCarousel();
	
});

//form validation
	function Form1_Validator(theForm)
{
  var alertsay = "";

if (theForm.firstName.value == "")
  {
    alert("Please type in your first name");
    theForm.firstName.focus();
    return (false);
  }

if (theForm.lastName.value == "")
  {
    alert("Please type in your last name");
    theForm.lastName.focus();
    return (false);
  }
  
if (theForm.sport.value == "")
  {
    alert("Please select your sport of choice");
    theForm.sport.focus();
    return (false);
  }
  
if (theForm.age.value == "")
  {
    alert("Please select your age range");
    theForm.age.focus();
    return (false);
  }
  
if (theForm.gender.value == "")
  {
    alert("Please select your gender");
    theForm.gender.focus();
    return (false);
  }
  
if (!isValidEmail(theForm.email.value)) {
		  alert("Please supply a valid email address.");
		  theForm.email.focus();
		  return false;
		}

function isValidEmail(str) 
{
			
      return (str.indexOf("@") > 0);
		
}
  
  return true;
}
 
 
 $.fn.infiniteCarousel = function () {

    function repeat(str, num) {
        return new Array( num + 1 ).join( str );
    }
  
    return this.each(function () {
        var $wrapper = $('> div', this).css('overflow', 'hidden'),
            $slider = $wrapper.find('> ul'),
            $items = $slider.find('> li'),
            $single = $items.filter(':first'),
            
            singleWidth = $single.outerWidth(), 
            visible = Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
            currentPage = 1,
            pages = Math.ceil($items.length / visible);            


        // 1. Pad so that 'visible' number will always be seen, otherwise create empty items
        if (($items.length % visible) != 0) {
            $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
            $items = $slider.find('> li');
        }

        // 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
        $items.filter(':first').before($items.slice(- visible).clone().addClass('cloned'));
        $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
        $items = $slider.find('> li'); // reselect
        
        // 3. Set the left position to the first 'real' item
        $wrapper.scrollLeft(singleWidth * visible);
        
        // 4. paging function
        function gotoPage(page) {
            var dir = page < currentPage ? -1 : 1,
                n = Math.abs(currentPage - page),
                left = singleWidth * dir * visible * n;
            
            $wrapper.filter(':not(:animated)').animate({
                scrollLeft : '+=' + left
            }, 500, function () {
                if (page == 0) {
                    $wrapper.scrollLeft(singleWidth * visible * pages);
                    page = pages;
                } else if (page > pages) {
                    $wrapper.scrollLeft(singleWidth * visible);
                    // reset back to start position
                    page = 1;
                } 

                currentPage = page;
            });                
            
            return false;
        }
        
        $wrapper.after('<a class="arrow back">&lt;</a><a class="arrow forward">&gt;</a>');
        
        // 5. Bind to the forward and back buttons
        $('a.back', this).click(function () {
            return gotoPage(currentPage - 1);                
        });
        
        $('a.forward', this).click(function () {
            return gotoPage(currentPage + 1);
        });
        
        // create a public interface to move to a specific page
        $(this).bind('goto', function (event, page) {
            gotoPage(page);
        });
    });  
};