document.oncontextmenu = function(){return false}

// IE
document.onselectstart=function(){
if (event.srcElement.type != "text" && event.srcElement.type != "textarea" && event.srcElement.type != "password")
	return false
else
	return true;
};

// FIREFOX
if (window.sidebar){
	document.onmousedown=function(e){
	var obj=e.target;
	if (obj.tagName.toUpperCase() == "INPUT" || obj.tagName.toUpperCase() == "TEXTAREA" || obj.tagName.toUpperCase() == "PASSWORD")
		return true;
	else
		return false;
	}
}

document.ondragstart = function(){return false}