diff --git a/js/cs.js b/js/cs.js
index dcdd7ba..ec1db1a 100644
--- a/js/cs.js
+++ b/js/cs.js
@@ -219,11 +219,12 @@ function stickyFoot(){
 	var wrapperH = document.getElementById('page').clientHeight;
 	var footerH = document.getElementById('footers').clientHeight;
 	var comboH = wrapperH + footerH;
-	var windowH = window.innerHeight;
-	if(windowH>=comboH){
-		$('body').addClass('sticky')
+	var windowH = $(window).innerHeight();
+
+	if(windowH >= comboH){
+		$('body').addClass('sticky');
 	} else {
-		$('body').removeClass('sticky')
+		$('body').removeClass('sticky');
 	}
 }
 window.onload = function (){