//form tags to omit in NS6+:
var omitformtags=["input", "textarea", "select"]

omitformtags=omitformtags.join("|")

function disableselect(e){
if (omitformtags.indexOf(e.target.tagName.toLowerCase())==-1)
return false;
}

function reEnable(){
return true;
}

if (typeof document.onselectstart!="undefined")
document.onselectstart=new Function ("return false")
else{
document.onmousedown=disableselect
document.onmouseup=reEnable
}

function disableCtrlModifer(evt)
{
var disabled = {a:0, c:0, x:0}; // v:0
var ctrlMod = (window.event)? window.event.ctrlKey : evt.ctrlKey;
var key = (window.event)? window.event.keyCode : evt.which;
key = String.fromCharCode(key).toLowerCase();
return (ctrlMod && (key in disabled))? false : true;
}