// bg
if (!doneIEAlphaFix)
{
- doneIEAlphaFix = true;
- var plogo = document.getElementById('p-logo');
- var logoa = plogo.getElementsByTagName('a')[0];
- var bg = logoa.currentStyle.backgroundImage;
- var imageUrl = bg.substring(5, bg.length-2);
-
- if (imageUrl.substr(imageUrl.length-4).toLowerCase() == '.png') {
- var logospan = logoa.appendChild(document.createElement('span'));
-
- logoa.style.backgroundImage = 'none';
- logospan.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' + imageUrl + ')';
- logospan.style.height = '100%';
- logospan.style.position = 'absolute';
- logospan.style.width = logoa.currentStyle.width;
- logospan.style.cursor = 'hand';
- // Center image with hack for IE5.5
- if (document.documentElement.dir == "rtl")
- {
- logospan.style.right = '50%';
- logospan.style.setExpression('marginRight', '"-" + (this.offsetWidth / 2) + "px"');
- }
- else
- {
- logospan.style.left = '50%';
- logospan.style.setExpression('marginLeft', '"-" + (this.offsetWidth / 2) + "px"');
- }
- logospan.style.top = '50%';
- logospan.style.setExpression('marginTop', '"-" + (this.offsetHeight / 2) + "px"');
- }
+ doneIEAlphaFix = true;
+ var plogo = document.getElementById('p-logo');
+ if (!plogo) return;
+
+ var logoa = plogo.getElementsByTagName('a')[0];
+ if (!logoa) return;
+
+ var bg = logoa.currentStyle.backgroundImage;
+ var imageUrl = bg.substring(5, bg.length-2);
+
+ if (imageUrl.substr(imageUrl.length-4).toLowerCase() == '.png') {
+ var logospan = logoa.appendChild(document.createElement('span'));
+
+ logoa.style.backgroundImage = 'none';
+ logospan.style.filter = 'progid:DXImageTransform.Microsoft.AlphaImageLoader(src=' + imageUrl + ')';
+ logospan.style.height = '100%';
+ logospan.style.position = 'absolute';
+ logospan.style.width = logoa.currentStyle.width;
+ logospan.style.cursor = 'hand';
+ // Center image with hack for IE5.5
+ if (document.documentElement.dir == "rtl")
+ {
+ logospan.style.right = '50%';
+ logospan.style.setExpression('marginRight', '"-" + (this.offsetWidth / 2) + "px"');
+ }
+ else
+ {
+ logospan.style.left = '50%';
+ logospan.style.setExpression('marginLeft', '"-" + (this.offsetWidth / 2) + "px"');
+ }
+ logospan.style.top = '50%';
+ logospan.style.setExpression('marginTop', '"-" + (this.offsetHeight / 2) + "px"');
+ }
}
}