diff --git a/crayon_formatter.class.php b/crayon_formatter.class.php
index 9adf4c46..4863c72c 100644
--- a/crayon_formatter.class.php
+++ b/crayon_formatter.class.php
@@ -115,8 +115,8 @@ public static function print_code($hl, $code, $line_numbers = TRUE, $print = TRU
             $_line_height = $hl->setting_val(CrayonSettings::LINE_HEIGHT);
             // Don't allow line height to be less than font size
             $line_height = ($_line_height > $_font_size ? $_line_height : $_font_size) . 'px !important;';
-            $toolbar_height = $font_size * 1.5 . 'px !important;';
-            $info_height = $font_size * 1.4 . 'px !important;';
+            $toolbar_height = floatval($font_size) * 1.5 . 'px !important;';
+            $info_height = floatval($font_size) * 1.4 . 'px !important;';
 
             $font_style .= "font-size: $font_size line-height: $line_height";
             $toolbar_style .= "font-size: $font_size";
@@ -131,7 +131,7 @@ public static function print_code($hl, $code, $line_numbers = TRUE, $print = TRU
         } else if (!$hl->is_inline()) {
             if (($font_size = CrayonGlobalSettings::get(CrayonSettings::FONT_SIZE)) !== FALSE) {
                 $font_size = $font_size->def() . 'px !important;';
-                $line_height = ($font_size * 1.4) . 'px !important;';
+                $line_height = (floatval($font_size) * 1.4) . 'px !important;';
             }
         }
 
diff --git a/util/crayon_util.class.php b/util/crayon_util.class.php
index 9a40608c..626aeef9 100644
--- a/util/crayon_util.class.php
+++ b/util/crayon_util.class.php
@@ -70,7 +70,7 @@ public static function lines($path, $opts = NULL) {
             if ($whitespace) {
                 $delimiter = CRAYON_NL;
             }
-            $lines = implode($lines, $delimiter);
+            $lines = implode($delimiter, $lines);
         }
 
         return $lines;
@@ -645,7 +645,7 @@ public static function get_var_str() {
         foreach ($_GET as $get => $val) {
             $get_vars[] = $get . '=' . $val;
         }
-        return implode($get_vars, '&');
+        return implode('&', $get_vars);
     }
 
     // Creates a unique ID from a string