function criterios()
{

var sLength = document.Form2.txtString.value.length
	var i=0
	var salir=false


if (Form2.txtString.value.length==0){
alert("Por favor introduzca la palabra o palabras a buscar.")
}else{
 while ((i < sLength) && (!salir))
    { 
		if (
			(document.Form2.txtString.value.charAt(i)== "'") ||
			(document.Form2.txtString.value.charAt(i)== "%") ||
			(document.Form2.txtString.value.charAt(i)== "´") 
		   )
			{
			 salir = true
			}
		i++
    }
	if (salir){alert("Atención!!! El caracter introducido no es valido")}
	else {
  		Form2.action="/w-buscador/encontrado.aspx"
		document.Form2.submit()
 
	     }
 }
}

function abrewin(url,dim){

     window.open(url, "_blank", dim);
     return;


}