I have the following code, which works perfectly in Chrome/FF:
chkbx_send_demo.onchange = function(){ if(sel_template.selectedIndex <= 0 && ch
Are you sure onclick does not work? Did you check for javascript errors?
The following works in IE7 (don't have IE6 to test)
Test
Note: This is only for onclick. OnChange works differently in IE, see GOsha's answer.