diff --git a/core/js/js.js b/core/js/js.js
index ee8bdea7255a..a30d66c00b8c 100644
--- a/core/js/js.js
+++ b/core/js/js.js
@@ -468,6 +468,36 @@ function object(o) {
 	return new F();
 }
 
+/**
+ * Fills height of window. (more precise than height: 100%;)
+ */
+function fillHeight(selector) {
+	if (selector.length === 0) {
+		return;
+	}
+	var height = parseFloat($(window).height())-selector.offset().top;
+	selector.css('height', height + 'px');
+	if(selector.outerHeight() > selector.height()){
+		selector.css('height', height-(selector.outerHeight()-selector.height()) + 'px');
+	}
+	console.warn("This function is deprecated! Use CSS instead");
+}
+
+/**
+ * Fills height and width of window. (more precise than height: 100%; or width: 100%;)
+ */
+function fillWindow(selector) {
+	if (selector.length === 0) {
+		return;
+	}
+	fillHeight(selector);
+	var width = parseFloat($(window).width())-selector.offset().left;
+	selector.css('width', width + 'px');
+	if(selector.outerWidth() > selector.width()){
+		selector.css('width', width-(selector.outerWidth()-selector.width()) + 'px');
+	}
+	console.warn("This function is deprecated! Use CSS instead");
+}
 
 $(document).ready(function(){