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MyUtilities.js

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+// MyUtillities.js
+// Copyright (c) Christoph Pacher (http://www.christophpacher.com)
+
+var MyUtilities = {
+  getWindowDimensions: function() {
+    var myWidth = myHeight = 0;
+    if( typeof( window.innerWidth ) == 'number' ) {
+        //Non-IE
+        myWidth = window.innerWidth;
+        myHeight = window.innerHeight;
+    } else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
+        //IE 6+ in 'standards compliant mode'
+        myWidth = document.documentElement.clientWidth;
+        myHeight = document.documentElement.clientHeight;
+    } else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
+        //IE 4 compatible
+        myWidth = document.body.clientWidth;
+        myHeight = document.body.clientHeight;
+    }
+    return {width: myWidth, height: myHeight};
+  },
+  clamp: function(a, low, high){
+	return Math.max(low, Math.min(a, high));
+  },
+  copyArray: function(a){
+      newA = new Array();
+      var l = a.length;
+      for (var i = 0; i < l; i++)
+        {
+            newA[i] = a[i];
+        }
+      return newA;
+  }
+};