window.onload = function(){
	if (document.getElementById)
	{
		// modifica target
		var pageLinks = document.getElementsByTagName("a");
		var pageForms = document.getElementsByTagName("form");

		for (var k = 0; k < pageLinks.length; k++)
		{
			 if (pageLinks[k].className.indexOf('t_blank') != -1) {

				pageLinks[k].setAttribute('target', '_blank');
			 }
		}
		for (var k = 0; k < pageForms.length; k++)
		{
			if (pageForms[k].className.indexOf('t_blank') != -1)
			{
				pageForms[k].setAttribute("target", "_blank");
			}
		}
	}
}