var lastScrollFromTop = 0;
var blockScrollButton = false;
var lastWindowHeight = 0;
var blockRelocation = false;
var blockConsultButtonMove = false;

function scrollConsultButton(){
	if(blockScrollButton)return;
	var currentWindowHeight = parseFloat( jQuery(window).height());
	var windowScrollFromTop = parseFloat( jQuery(window).scrollTop());
	var delta =windowScrollFromTop - lastScrollFromTop;
	if(currentWindowHeight != lastWindowHeight){
		delta += (currentWindowHeight - lastWindowHeight)/2-46;
		lastWindowHeight = currentWindowHeight;
	};
	lastScrollFromTop = windowScrollFromTop;
	blockScrollButton = true;
	 jQuery(".btn-consultant").animate(
			{"top": "+="+delta}, "slow", function(){
				blockScrollButton = false;
			}
	);
};