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IE7 absolute and relative positioning problems ...

Hi,

If you look at the following code in IE7 and FF you will see the difference. The layer should appear over all other layers but in IE7 it doesn't ... any ideas?

Thanks
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
 
<body>
 
<div style="position:relative;width:300px;height:200px;border:1px solid #000;">
	<div style="position:absolute; width:200px; height:400px; background-color:#FFFF00;border:1px dotted #ff0000; z-index:99">This box should overlap the box below?</div>
</div>
 
<div style="position:relative; width:300px; height:200px; border:1px solid #000; background-color:#CCCCCC; z-index:0;">
	<p>... But it doesn't in IE7?</p>
</div>
 
</body>
</html>

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Eternal_Student
Asked:
Eternal_Student
2 Solutions
 
David H.H.LeeCommented:
Hi Eternal_Student,
Try reduce the z-index using negative value.
eg:
<div style="position:relative; width:300px; height:200px; border:1px  solid #000; background-color:#CCCCCC; z-index:-1;">
0
 
Eternal_StudentAuthor Commented:
Hi x com,

I had already tried that and the div disappears completely.

It works in this example I have given but there must be some other factors in the real version.

Any other ideas?
0
 
David H.H.LeeCommented:
>>..It works in this example I have given but there must be some other factors in the real version.
I only able test via the test case here. Perhaps any other control that causing the issue? Possible post some of the real version code that not working properly?
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poweraddictCommented:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Documment</title>
</head>
 
<body>
    <div style="position:absolute;width:200px; height:400px; background-color:#FFFF00;border:1px dotted #ff0000; z-index:1">This box should overlap the box below?</div>
<div style="position:relative;width:300px;height:200px;border:1px solid #000;">
     
 
 </div>
<div style="position:relative; width:300px; height:200px; border:1px solid #000; background-color:#CCCCCC; z-index:0;">
        <p>... But it doesn't in IE7?</p>
</div>
 
</body>
</html>

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0
 
arekkusuCommented:
For me ditch the relative positioning and the z-index - then it displays how you wish.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
 
<body>
 
<div style="width:300px;height:200px;border:1px solid #000;">
        <div style="position:absolute; width:200px; height:400px; background-color:#FFFF00;border:1px dotted #ff0000;">
		This box should overlap the box below?
	</div>
</div>
 
<div style="width:300px; height:200px; border:1px solid #000; background-color:#CCCCCC;">
        <p>... But it doesn't in IE7?</p>
</div>
 
</body>
</html>

Open in new window

0
 
Eternal_StudentAuthor Commented:
OK - I have noticed that if I add position:relative to my container it works by setting the z-index to -1.

Why would the container need position:relative?
0
 
Eternal_StudentAuthor Commented:
But now when I set the z-index to -1 it hides in FF with position:relative on the container!!!

I have added a hack for ie ... any ideas why this is happening also?

Here is what I have ...


<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>
 
<body>
 
<div style="width:99.8%;font-size:82%;background-color:#fff; position:relative">
 
<div style="position:relative;width:300px;height:200px;border:1px solid #000;">
	<div style="position:absolute; width:200px; height:400px; background-color:#FFFF00;border:1px dotted #ff0000; z-index:99">This box should overlap the box below?</div>
</div>
 
<div style="position:relative; width:300px; height:200px; border:1px solid #000; background-color:#CCCCCC; *z-index:-1">
	<p>... But it doesn't in IE7?</p>
</div>
 
</div>
 
</body>
</html>

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0

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