function blockBrackets(e)
{
	var key;
	var keychar;
	var reg;
	
	if(window.event) {
		key = e.keyCode; 
	}
	else if(e.which) {
		key = e.which; 
	}
	else {
		return true;  //no browser support
	}
	keychar = String.fromCharCode(key);
	if ( keychar == '[' || keychar == ']' )
		return false;
	return true;
}