get_element = document.all ?
function (s_id) { return document.all[s_id] } :
function (s_id) { return document.getElementsByName(s_id) };

function buscaRastreamentoHome()
 	{
		if(document.rastreamentohome.tipo.checked) {
			//nacional
			var theurl = "http://websro.correios.com.br/sro_bin/txect01$.QueryList" + "?" + "P_LINGUA=" + document.rastreamentohome.P_LINGUA.value + "&P_TIPO=" + document.rastreamentohome.P_TIPO.value + "&P_COD_UNI=" + document.rastreamentohome.P_COD_UNI.value ;
			//alert(theurl);
			//alert(document.rastreamentohome.tipo[0].checked)
			window.open(theurl);
			//document.rastreamentohome.submit();
			return (false);
		}
				
		if(document.rastreamentohome.P_COD_UNI.value.substr(0,2)=='XM' || document.rastreamentohome.P_COD_UNI.value.substr(0,2)=='VC'){
  				window.open("http://websro.correios.com.br/sro_bin/txect01$.QueryList?P_COD_UNI="+document.rastreamentohome.P_COD_UNI.value.substr(0,13)+"&P_TIPO=001&P_LINGUA=001","SRO","width=550,height=400,scrollbars=yes,resizable=no,toolbar=no");
  				document.rastreamentohome.P_COD_UNI.value = "";
				return (false);
  		}
 	}