Hide element with Javascript. Doesn't work with IE and Chrome

Question

I have problems with hiding elements. I already read this topic Javascript working on Firefox but not in Chrome and IE6 but didn't get help from there. Javascript code, what should hide/show textbox and radio buttons:

function hide1(a)
{
var text1=document.getElementById("text1");
text1.style.visibility = 'visible';
text1.value = a;

document.getElementById("radio1").style.visibility = 'hidden';
document.getElementById("radio2").style.visibility = 'hidden';
document.getElementById("rlabel").style.visibility = 'hidden';
}

function show1()
{
document.getElementById("text1").style.visibility = 'hidden';
document.getElementById("radio1").style.visibility = 'visible';
document.getElementById("radio2").style.visibility = 'visible';
document.getElementById("rlabel").style.visibility = 'visible';
}

And HTML:

<select id='listb2'>
  <option onclick='hide1("$age");' value='1'>Age</option>
  <option onclick='show1();' value='2'>Sex</option>
</select>

Now with Firefox and Opera it change radio buttons and textbox to visible/hidden when I choose one of the options. But with Chrome and IE they wouldn't. I also tried with "... .style.display = 'none';" nothing happened (on IE and Chrome, FF and Opera it works) even this time.

FF 5.0; Chrome 12; IE 8; Opera 11.50

Now works with:

<select onchange='hideshow(this.value);' id='listb2'>
  <option value='1'>Age</option>
  <option value='2'>Sex</option>
</select>

Answer 1

onclick isn't valid for option elements.

Handle the onchange event of the select instead, get the selected value using the code below and then do your conditional processing.

var element = document.getElementById("listb2");
var selectedValue = element.options[element.selectedIndex].value;