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Control font size JS Code

Source: Internet
Author: User
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<Script>
Var tgs = new Array ('div ', 'td', 'tr ');
Var szs = new Array ('xx-small', 'x-small', 'small', 'medium ', 'large', 'x-large ', 'xx-large ');
Var startSz = 2;
Function ts (trgt, inc ){
If (! Document. getElementById) return
Var d = document, cEl = null, sz = startSz, I, j, cTags;
Sz + = inc;
If (sz <0) sz = 0;
If (sz> 6) sz = 6;
StartSz = sz;
If (! (CEl = d. getElementById (trgt) cEl = d. getElementsByTagName (trgt) [0];
CEl. style. fontSize = szs [sz];
For (I = 0; I <tgs. length; I ++ ){
CTags = cEl. getElementsByTagName (tgs [I]);
For (j = 0; j <cTags. length; j ++) cTags [j]. style. fontSize = szs [sz];
}
}
</Script>
<Style>
. Tabfont {font-size: 12px}
</Style>
<Body>
<A href = "javascript: ts ('body', 1)"> + zoom in font </a> | <
Href = "javascript: ts ('body',-1)"> + reduce font </a> <br>
<B> Javascript: </B> <br>
<Table align = center> <tr> <td class = tabfont>
Var tgs = new Array ('div ', 'td', 'tr '); <br>
Var szs = new Array ('xx-small', 'x-small', 'small', 'medium ', 'large', 'x-large ', 'xx-large'); <br>
Var startSz = 2; <br>
Function ts (trgt, inc) {<br>
If (! Document. getElementById) return <br>
Var d = document, cEl = null, sz = startSz, I, j, cTags; <br>
Sz + = inc; <br>
If (sz <0) sz = 0; <br>
If (sz> 6) sz = 6; <br>
StartSz = sz; <br>
If (! (CEl = d. getElementById (trgt) cEl = d. getElementsByTagName (trgt) [0]; <br>
CEl. style. fontSize = szs [sz]; <br>
For (I = 0; I <tgs. length; I ++) {<br>
CTags = cEl. getElementsByTagName (tgs [I]); <br>
For (j = 0; j <cTags. length; j ++) cTags [j]. style. fontSize = szs [sz]; <br>
} <Br>
} <Br>
</Td> </tr>
</Table>
<P> <a href = "http://www.bkjia.com/edu" target = "_ blank"> help house tutorial </a> </p>
</Body>

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