Fix error page alignment problems in various browsers

issue #418

framework/yii/views/errorHandler/callStackItem.php

@@ -16,7 +16,7 @@ $context = $this->context;
 <li class="<?php if (!$context->isCoreFile($file) || $index === 1) echo 'application'; ?> call-stack-item">
 	<div class="element-wrap">
 		<div class="element">
-			<span class="line-number"><?php echo (int)$index; ?>.</span>
+			<span class="item-number"><?php echo (int)$index; ?>.</span>
 			<span class="text"><?php if ($file !== null) echo 'in ' . $context->htmlEncode($file); ?></span>
 			<?php if ($method !== null): ?>
 				<span class="call">
@@ -36,7 +36,12 @@ $context = $this->context;
 			<?php endfor; ?>
 			<div class="code">
 				<span class="lines"><?php for ($i = $begin; $i <= $end; ++$i) echo (int)$i . '<br/>'; ?></span>
-				<pre><?php for ($i = $begin; $i <= $end; ++$i) echo $context->htmlEncode($lines[$i]); ?></pre>
+				<pre><?php
+					// fill empty lines with a whitespace to avoid rendering problems in opera
+					for ($i = $begin; $i <= $end; ++$i) {
+						echo (trim($lines[$i]) == '') ? " \n" : $context->htmlEncode($lines[$i]);
+					}
+				?></pre>
 			</div>
 		</div>
 	<?php endif; ?>

framework/yii/views/errorHandler/main.php

@@ -169,7 +169,7 @@ html,body{
 	color: #000;
 	text-shadow: 0 1px 0 #cacaca;
 }
-.call-stack ul li .line-number{
+.call-stack ul li .item-number{
 	width: 45px;
 	display: inline-block;
 }
@@ -204,9 +204,8 @@ html,body{
 	background-color: #ffebeb;
 	position: absolute;
 	width: 100%;
-	height: 20px;
+	height: 18px;
 	z-index: 100;
-	margin-top: 15px;
 }
 .call-stack ul li .hover-line{
 	background: none;
@@ -216,8 +215,8 @@ html,body{
 }
 .call-stack ul li .code{
 	min-width: 860px; /* 960px - 50px * 2 */
-	margin: 0 auto;
-	padding: 15px 50px;
+	margin: 15px auto;
+	padding: 0 50px;
 	position: relative;
 }
 .call-stack ul li .code .lines{
@@ -226,6 +225,8 @@ html,body{
 	left: 50px;
 	line-height: 18px;
 	font-size: 14px;
+	vertical-align: middle;
+	text-align: right;
 	font-family: Consolas, Courier New, monospace;
 	color: #aaa;
 }
@@ -235,6 +236,7 @@ html,body{
 	left: 50px;
 	line-height: 18px;
 	font-size: 14px;
+	vertical-align: middle;
 	font-family: Consolas, Courier New, monospace;
 	display: inline;
 }