diff --git a/apps/common/main/lib/util/utils.js b/apps/common/main/lib/util/utils.js
index ce019dd08..8a18386d4 100644
--- a/apps/common/main/lib/util/utils.js
+++ b/apps/common/main/lib/util/utils.js
@@ -105,51 +105,54 @@ Common.Utils = _.extend(new(function() {
         me = this,
         checkSize = function() {
 			me.zoom = 1;
-			if (false)
+			if (isChrome && !isOpera && document && document.firstElementChild && document.body)
 			{
-				// этот код - рабочий, но только если этот ифрейм открыт на весь размер браузера
-				// (window.outerWidth и window.innerWidth зависимы)
-				if (window.innerWidth > 300)
+				if (false)
+				{
+					// этот код - рабочий, но только если этот ифрейм открыт на весь размер браузера
+					// (window.outerWidth и window.innerWidth зависимы)
+					if (window.innerWidth > 300)
+						me.zoom = window.outerWidth / window.innerWidth;
+
+					if (Math.abs(me.zoom - 1) < 0.1)
+						me.zoom = 1;
+
 					me.zoom = window.outerWidth / window.innerWidth;
 
-				if (Math.abs(me.zoom - 1) < 0.1)
-					me.zoom = 1;
+					var _devicePixelRatio = window.devicePixelRatio / me.zoom;
 
-				me.zoom = window.outerWidth / window.innerWidth;
+					// device pixel ratio: кратно 0.5
+					_devicePixelRatio = (5 * (((2.5 + 10 * _devicePixelRatio) / 5) >> 0)) / 10;
+					me.zoom = window.devicePixelRatio / _devicePixelRatio;
 
-				var _devicePixelRatio = window.devicePixelRatio / me.zoom;
-
-				// device pixel ratio: кратно 0.5
-				_devicePixelRatio = (5 * (((2.5 + 10 * _devicePixelRatio) / 5) >> 0)) / 10;
-				me.zoom = window.devicePixelRatio / _devicePixelRatio;
-
-				// chrome 54.x: zoom = "reset" - clear retina zoom (windows)
-				//document.firstElementChild.style.zoom = "reset";
-				document.firstElementChild.style.zoom = 1.0 / me.zoom;
-			}
-			else
-			{
-				// делаем простую проверку
-				// считаем: 0 < window.devicePixelRatio < 2 => _devicePixelRatio = 1; zoom = window.devicePixelRatio / _devicePixelRatio;
-				// считаем: window.devicePixelRatio >= 2 => _devicePixelRatio = 2; zoom = window.devicePixelRatio / _devicePixelRatio;
-				if (window.devicePixelRatio > 0.1)
-				{
-					if (window.devicePixelRatio < 1.99)
-					{
-						var _devicePixelRatio = 1;
-						me.zoom = window.devicePixelRatio / _devicePixelRatio;
-					}
-					else
-					{
-						var _devicePixelRatio = 2;
-						me.zoom = window.devicePixelRatio / _devicePixelRatio;
-					}
 					// chrome 54.x: zoom = "reset" - clear retina zoom (windows)
 					//document.firstElementChild.style.zoom = "reset";
 					document.firstElementChild.style.zoom = 1.0 / me.zoom;
 				}
 				else
-					document.firstElementChild.style.zoom = "normal";
+				{
+					// делаем простую проверку
+					// считаем: 0 < window.devicePixelRatio < 2 => _devicePixelRatio = 1; zoom = window.devicePixelRatio / _devicePixelRatio;
+					// считаем: window.devicePixelRatio >= 2 => _devicePixelRatio = 2; zoom = window.devicePixelRatio / _devicePixelRatio;
+					if (window.devicePixelRatio > 0.1)
+					{
+						if (window.devicePixelRatio < 1.99)
+						{
+							var _devicePixelRatio = 1;
+							me.zoom = window.devicePixelRatio / _devicePixelRatio;
+						}
+						else
+						{
+							var _devicePixelRatio = 2;
+							me.zoom = window.devicePixelRatio / _devicePixelRatio;
+						}
+						// chrome 54.x: zoom = "reset" - clear retina zoom (windows)
+						//document.firstElementChild.style.zoom = "reset";
+						document.firstElementChild.style.zoom = 1.0 / me.zoom;
+					}
+					else
+						document.firstElementChild.style.zoom = "normal";
+				}
 			}
             me.innerWidth = window.innerWidth * me.zoom;
             me.innerHeight = window.innerHeight * me.zoom;