function initScollMenu(){
$(window).scroll(function(){
var window_top = $(window).scrollTop() + 175; // the "12" should equal the margin-top value for nav.stick
var div_top = $('#nav-anchor').offset().top;
if (window_top > div_top) {
$('#scrollMenuNav').addClass('stick');
} else {
$('#scrollMenuNav').removeClass('stick');
}
});
/**
* This part causes smooth scrolling using scrollto.js
* We target all a tags inside the nav, and apply the scrollto.js to it.
*/
$("#scrollMenuNav a").click(function(evn){
evn.preventDefault();
$('html,body').scrollTo(this.hash, this.hash);
scroll_top_height = 175;
if(this.hash == '')
$('html,body').stop().animate({scrollTop: 0-scroll_top_height},'slow');
else
$('html,body').stop().animate({scrollTop: ($(this.hash).offset().top-scroll_top_height)},'slow');
});
/**
* This part handles the highlighting functionality.
* We use the scroll functionality again, some array creation and
* manipulation, class adding and class removing, and conditional testing
*/
var aChildren = $("#scrollMenuNav li").children(); // find the a children of the list items
var aArray = []; // create the empty aArray
for (var i=0; i < aChildren.length; i++) {
var aChild = aChildren[i];
var ahref = $(aChild).attr('href');
aArray.push(ahref);
} // this for loop fills the aArray with attribute href values
/*$(window).scroll(function(){
var windowPos = $(window).scrollTop(); // get the offset of the window from the top of page
var windowHeight = $(window).height(); // get the height of the window
var docHeight = $(document).height();
for (var i=0; i < aArray.length; i++) {
var theID = aArray[i];
var divPos = $(theID).offset().top; // get the offset of the div from the top of page
var divHeight = $(theID).height(); // get the height of the div in question
if (windowPos >= divPos && windowPos < (divPos + divHeight)) {
$("a[href='" + theID + "']").addClass("nav-active");
} else {
$("a[href='" + theID + "']").removeClass("nav-active");
}
}
if(windowPos + windowHeight == docHeight) {
if (!$("#scrollMenuNav li:last-child a").hasClass("nav-active")) {
var navActiveCurrent = $(".nav-active").attr("href");
$("a[href='" + navActiveCurrent + "']").removeClass("nav-active");
$("#scrollMenuNav li:last-child a").addClass("nav-active");
}
}
});*/
}