protect copy of data on page in javascript
<
SCRIPT language=javascript type=text/javascript>
function disableCtrlKeyCombination(e)
{//list all CTRL + key combinations you want to disable
var forbiddenKeys = new Array(‘a’, ‘n’, ‘c’, ‘x’, ‘v’, ‘j’);
var key;var isCtrl;
if(window.event)
{key = window.event.keyCode; //IE
if(window.event.ctrlKey)
isCtrl = true;
else
isCtrl = false;
}
else
{key = e.which; //firefox
if(e.ctrlKey)
isCtrl = true;
else
isCtrl = false;
}
//if ctrl is pressed check if other key is in forbidenKeys array
if(isCtrl)
{for(i=0; i<forbiddenKeys.length; i++)
{// alert(forbiddenKeys[i]);
//case-insensitive comparation
if(forbiddenKeys[i].toLowerCase() == String.fromCharCode(key).toLowerCase())
{// alert(’Key combination CTRL + ‘ +String.fromCharCode(key) +’ has been disabled.’);
return false;
}}}
return true;
}
function click(e) {
if (document.all) {
if (event.button == 2) {
//alert(message);
return false;
}}
if (document.layers) {
if (e.which == 3) {
// alert(message);
return false;
}}}
if (document.layers) {
document.captureEvents(Event.MOUSEDOWN);
}
document.onmousedown=click;
</script>
in body tag write
<body oncontextmenu=”return false” onkeypress
=”return disableCtrlKeyCombination(event);” onkeydown=”return disableCtrlKeyCombination(event);” >
