// @author Alexander Farkas
// v. 1.21
// Do not edit
(function($) {
	if(!document.defaultView || !document.defaultView.getComputedStyle){ // IE6-IE8
		var oldCurCSS = jQuery.curCSS;
		jQuery.curCSS = function(elem, name, force){
			if(name === 'background-position'){
				name = 'backgroundPosition';
			}
			if(name !== 'backgroundPosition' || !elem.currentStyle || elem.currentStyle[ name ]){
				return oldCurCSS.apply(this, arguments);
			}
			var style = elem.style;
			if ( !force && style && style[ name ] ){
				return style[ name ];
			}
			return oldCurCSS(elem, 'backgroundPositionX', force) +' '+ oldCurCSS(elem, 'backgroundPositionY', force);
		};
	}
	var oldAnim = $.fn.animate;
	$.fn.animate = function(prop){
		if('background-position' in prop){
			prop.backgroundPosition = prop['background-position'];
			delete prop['background-position'];
		}
		if('backgroundPosition' in prop){
			prop.backgroundPosition = '('+ prop.backgroundPosition;
		}
		return oldAnim.apply(this, arguments);
	};
	function toArray(strg){
		strg = strg.replace(/left|top/g,'0px');
		strg = strg.replace(/right|bottom/g,'100%');
		strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g,"$1px$2");
		var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/);
		return [parseFloat(res[1],10),res[2],parseFloat(res[3],10),res[4]];
	}
	$.fx.step. backgroundPosition = function(fx) {
		if (!fx.bgPosReady) {
			var start = $.curCSS(fx.elem,'backgroundPosition');
			
			if(!start){//FF2 no inline-style fallback
				start = '0px 0px';
			}
			
			start = toArray(start);
			
			fx.start = [start[0],start[2]];
			
			var end = toArray(fx.options.curAnim.backgroundPosition);
			fx.end = [end[0],end[2]];
			
			fx.unit = [end[1],end[3]];
			fx.bgPosReady = true;
		}
		//return;
		var nowPosX = [];
		nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0];
		nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1];           
		fx.elem.style.backgroundPosition = nowPosX[0]+' '+nowPosX[1];

	};
})(jQuery);

// @author Brian W. Howell
$(document).ready(function(){
	
	// Information about li & bg img dimensions					   
						   
	var liWidth = 105;
	var liWidthHalf = liWidth / 2;
	var bgImgWidth = 100;
	var bgImgWidthHalf = bgImgWidth / 2;
						   
	// Determine location of the active li in navmenu
	
	var origLoc = $('div#header ul li.active').position();
	var origLocTop = origLoc.top + 30;
	var origLocLeft = origLoc.left + liWidthHalf - bgImgWidthHalf-10; // (10) event fix
	
	// Locate bg img behind active li
	
	$('div#header ul').css('background', 'url("css/images/navhl.png") ' + origLocLeft + 'px ' + origLocTop + 'px no-repeat');
	
	// hover effects
	
	$('div#header ul li a').mouseover(function() {
		$('div#header ul').stop();				
		var newLoc = $(this).parent().position();
		var newLocTop = newLoc.top + 30;
		var newLocLeft = newLoc.left + liWidthHalf - bgImgWidthHalf - 10; // (10) event fix
		$('div#header ul').animate({backgroundPosition: newLocLeft+'px '+newLocTop+'px'});
	});
	$('div#header ul li a').mouseout(function() {
		$('div#header ul').stop();		
		$('div#header ul').animate({backgroundPosition: origLocLeft+'px '+origLocTop+'px'});
	});
		
});