Hi monks i need help with regular expression:

I want to change span tags only if it has font-weight: bold; as :

example:

Like this

<span style="font-weight: bold;color:#000000;">
<span style="font-family:Arial MT;font-size: 25px; font-weight: bold;"
+> 
<span style="color:#000000;" xmlns="http://www.w3.org/1999/xhtml">
[download]

TO

<span style="font-weight: bold;">
<span style="font-weight: bold;"> 
<span style="color:#000000;" xmlns="http://www.w3.org/1999/xhtml">
[download]

I used expression:

while($content =~ /<span style="(.*?)"/gi)
{
my $got=$1;
 if($got=~/font-weight: bold;/gi)
{
$content =~ s/<span style="(.*?)">/<span style="font-weight: bold;">/g
+i;
}
}
[download]

There is no result for the above code

Any help for forming regular expression for this

Update: It seems the compiler goes to

Line 1:

<span style="font-weight: bold;color:#000000;">

It extracts style content using

while($content =~ /<span style="(.*?)"/gi)

Then i have assigned

$got=$1;

So i will get $1 = font-weight: bold;color:#000000;

Then i check whether it has font-weight: bold; using  if($got=~/font-weight: bold;/gi)

It has font-weight: bold; !!!

Now how will i move again to Line 1 to change it as

As per toolic $content =~ s/<span style="font.*/<span style="font-weight: bold;">/gi; this is not checking font-weight: bold;