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<form name="a">
<select name="a" size="1" onchange="_sel(this)">
<option value="a">1</option>
<option value="b">2</option>
<option value="c">3</option>
</select>
</form>

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function _sel(obj){
alert("ÏÔʾÎı¾£º" + obj.options[obj.selectedIndex].text);
alert("Öµ£º" + obj.options[obj.selectedIndex].value);
}
// --></mce:script>

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document.all["PanelSMS"].style.visibility="hidden";
document.all["PanelSMS"].style.visibility="visible";
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document.all["PanelSMS"].style.display="none";
document.all["PanelSMS"].style.display="inline";
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<mce:script language="javascript" type="text/javascript"><!--
new function(s)
{
if(!arguments.length||!s) return null;
if(""==s) return 0;
var l=0;
for(var i=0;i<s.length;i++)
{
if(s.charCodeAt(i)>255) l+=2;
else l++;
}
alert(l);
}("helloÄãºÃ£¬ÎÒºÃ,´ó¼ÒºÃ£¡world!");
// --></mce:script>

5. ÈçºÎ¿ØÖÆalertÖеĻ»ÐÐ
<mce:script language="javascript" type="text/javascript"><!--
alert("hello\nworld");
// --></mce:script>

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