mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-08 04:27:37 +00:00
49 lines
1.2 KiB
HTML
49 lines
1.2 KiB
HTML
<html>
|
|
<head>
|
|
<style>
|
|
th, td { background: #ddd; }
|
|
table { border-collapse: collapse; }
|
|
</style>
|
|
</head>
|
|
<body>
|
|
|
|
<table border="1">
|
|
<tr><th>x</th><th colspan="2" class="a1 a2">A</th></tr>
|
|
<tr><th>x</th><td class="a1">a1</td><td class="a2">a2</td></tr>
|
|
</table>
|
|
|
|
<script type="text/javascript">
|
|
|
|
function addCSSRule(selector, rule) {
|
|
var css = document.styleSheets[ document.styleSheets.length -1];
|
|
css.insertRule(selector+" {"+rule+"}", css.cssRules.length);
|
|
}
|
|
|
|
function removeCSSRule(selector, rule) {
|
|
rule = rule.split(':');
|
|
for (cssno=0; cssno<document.styleSheets.length;cssno++) {
|
|
var css = document.styleSheets[cssno];
|
|
for (i=(css.cssRules.length-1);i>=0;i--) {
|
|
var rule = css.cssRules[i];
|
|
if (rule.selectorText == selector && rule.style[ rule[0] ] == rule[1])
|
|
css.deleteRule(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
function setClassDisplay(display, classname) {
|
|
document.body.offsetWidth
|
|
if (display)
|
|
removeCSSRule("."+classname, "display:none");
|
|
else
|
|
addCSSRule("."+classname, "display:none");
|
|
}
|
|
|
|
setClassDisplay(false, 'a1');
|
|
setClassDisplay(false, 'a2');
|
|
setClassDisplay(true, 'a1');
|
|
setClassDisplay(true, 'a2');
|
|
</script>
|
|
|
|
</body>
|
|
</html> |