function trim(cadena)
{cadena = cadena.replace(/^\s+|\s+$/gi, ''); return cadena;	}
function placeFocus(){if (document.forms.length > 0){var field = document.forms[0];for (i = 0; i < field.length; i++){
if ((field.elements[i].type == "text")  || (field.elements[i].type == "textarea") || (field.elements[i].type == "password") || (field.elements[i].type.toString().charAt(0) == "s")){document.forms[0].elements[i].focus();break;}}}}
function verifica(which){var pass=true; var s; if (document.images) {for (i=0;i<which.length;i++) {	var tempobj=which.elements[i];
if (tempobj.name.substring(0,3)=="req") {s=tempobj.value;if (  (tempobj.type=="text"||tempobj.type=="textarea" || tempobj.type=="password" ) && trim(tempobj.value)=='' || tempobj.selectedIndex==0){	pass=false; break; } }   }}if (!pass) {	campo=document.getElementById(tempobj.name).firstChild.nodeValue;alert("Falta Ingresar "+campo.charAt(0).toUpperCase()+campo.substring(1).toLowerCase());	tempobj.focus();				
return false; } else  return true;	}