function MenuImage(tdthis,tdbool)
{
	if(tdbool==true)
	{
		tdthis.background="images/nav_on.gif";
	}
	else
	{
		tdthis.background="images/nav_off.gif";
	}
}

String.prototype.trim=function()
{
	return this.replace(/(^\s+)|(\s+$)/g,"");
}