function trim(str)
{
   return str.replace(/^\s*|\s*$/g,"");
}
function popup(url)
{
	window.open(url, "preview", '');	
}

function setActiveTab(tab)
{
	if(tab && tab != '' && document.getElementById(tab+"Tab"))
	{
		document.getElementById(tab+"Tab").className='active';
	}
}