function getScrollY() {
	  var scrOfX = 0, scrOfY = 0;
	  if( typeof( window.pageYOffset ) == 'number' ) {
	    //Netscape compliant
	    scrOfY = window.pageYOffset;
	    scrOfX = window.pageXOffset;
	  } else if( document.body && ( document.body.scrollLeft || document.body.scrollTop ) ) {
	    //DOM compliant
	    scrOfY = document.body.scrollTop;
	    scrOfX = document.body.scrollLeft;
	  } else if( document.documentElement && ( document.documentElement.scrollLeft || document.documentElement.scrollTop ) ) {
	    //IE6 standards compliant mode
	    scrOfY = document.documentElement.scrollTop;
	    scrOfX = document.documentElement.scrollLeft;
	  }
	  return scrOfY;
}		


//$('html,body').animate({scrollTop: $("#contact").offset().top - iSectionPadding}, iSlideDuration);
function updateScrollNavigation(){
	var iOffset;
	if($(window).width() < 310){
		iOffset = 320;
	} else if ($(window).width() < 400) {
		iOffset = 200;
	}
	else {
		iOffset = 100;
	}
	
	var iYPos = getScrollY();
	//alert(iYPos);
	if (iYPos < ($("#why-us").offset().top - iOffset)) {
		$('li').removeClass('active'); 
		$("#WhatWeDoList").addClass('active');
	}
	if (iYPos > ($("#why-us").offset().top - iOffset) && iYPos < ($("#contact").offset().top - iOffset)) {
		$('li').removeClass('active'); 
		$("#WhyUsList").addClass('active');
	}
	if (iYPos > ($("#contact").offset().top - iOffset)) {				
		$('li').removeClass('active'); 
		$("#ContactList").addClass('active');
	}
	
	if($(window).height() > $(window).height()){}
	
	return true;
}