<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 >
Messung V0.5 C=100 H=100 G=100
¤ Dauer der Verarbeitung: 0.2 Sekunden
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