// rollover
function initRollOverImages() {
  var image_cache = new Object();
  $("img.on").each(function(i) {
    var imgsrc = this.src;
    var dot = this.src.lastIndexOf('.');
    var imgsrc_ro = this.src.substr(0, dot) + '_ro' + this.src.substr(dot, 4);
    image_cache[this.src] = new Image();
    image_cache[this.src].src = imgsrc_ro;
    $(this).hover(
      function() { this.src = imgsrc_ro; },
      function() { this.src = imgsrc; });
  });
}

$(document).ready(initRollOverImages);


//popup
function initOpenNewWindow() {
  var popupEvent = function(event) {
    var option = this.href.replace(/^[^\?]+\??/,'').replace(/&/g, ',');
    window.open(this.href, this.rel, option).focus();
    event.preventDefault();
    event.stopPropagation();
  }
  $("a.popup").each(function(i) {
      $(this).click(popupEvent);
      $(this).keypress(popupEvent);
  });
}

$(document).ready(initOpenNewWindow);


// scrolling page top
function backToTop() {
	var x1 = x2 = x3 = 0;
	var y1 = y2 = y3 = 0;
		if (document.documentElement) {
		x1 = document.documentElement.scrollLeft || 0;
		y1 = document.documentElement.scrollTop || 0;
	}
	if (document.body) {
		x2 = document.body.scrollLeft || 0;
		y2 = document.body.scrollTop || 0;
	}
	x3 = window.scrollX || 0;
	y3 = window.scrollY || 0;
	var x = Math.max(x1, Math.max(x2, x3));
	var y = Math.max(y1, Math.max(y2, y3));
	window.scrollTo(Math.floor(x / 2), Math.floor(y / 2));
	if (x > 0 || y > 0) {
	window.setTimeout("backToTop()", 25);
	}
}


//close window
function closeWin(){
	window.opener = window;
	var win = window.open(location.href,"_self");
	win.close();
}

// Bigger Link
// Requires http://jquery.com version 1.2.1
(function($) {
	$.fn.biggerlink = function(options) {

		// Default settings
		var settings = {
			hoverclass:'hover', // class added to parent element on hover
			clickableclass:'hot', // class added to parent element with behaviour
			follow: true	// follow link? Set to false for js popups
		};
		if(options) {
			$.extend(settings, options);
		}
		$(this).filter(function(){
			 return $('a',this).length > 0;

		}).addClass(settings.clickableclass).each(function(i){
		
			// Add title of first link with title to parent
			$(this).attr('title', $('a[title]:first',this).attr('title'));
			
			// hover and trigger contained anchor event on click
			$(this)
			.mouseover(function(){
				window.status = $('a:first',this).attr('href');
				$(this).addClass(settings.hoverclass);
			})
			.mouseout(function(){
				window.status = '';
				$(this).removeClass(settings.hoverclass);
			})
			.bind('click',function(){
				$(this).find('a:first').trigger('click');
			})
			
			// triggerable events on anchor itself
			
			.find('a').bind('focus',function(){
				$(this).parents('.'+ settings.clickableclass).addClass(settings.hoverclass);
			}).bind('blur',function(){
				$(this).parents('.'+ settings.clickableclass).removeClass(settings.hoverclass);
			}).end()
			
			.find('a:first').bind('click',function(e){
				if(settings.follow == true)
				{
					window.location = this.href;
				}
				e.stopPropagation(); // stop event bubbling to parent
			}).end()
			
			.find('a',this).not(':first').bind('click',function(){
				$(this).parents('.'+ settings.clickableclass).find('a:first').trigger('click');
				return false;
			});
		});
		return this;
	};
})(jQuery);