function esRut(validar){	
      indice=2;
      total=0;
      dv=0;
      
 if(validar.length<7){
            alert('Rut Inválido: Menos de Siete digitos.');
			window.document.form.f_user.select();
			window.document.form.f_user.focus();
			 return false;
         }			
   
 for(i=validar.length-1;i>=0;i--)
 {				
            if(validar.charCodeAt(i)>=48&&validar.charCodeAt(i)<=57)
            {					
               if(indice<=7)
               {
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;
               }
               else
               {
                  indice=2;
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;				
               }
            }
	}
	
	total=11-(total-(Math.floor(total/11)*11));						
	if(total==11) dv="0";
	if(total==10) dv="K";
	if(total<10) dv= total ;
	
	window.document.form.f_dv.value= dv
	return true;
}

function esdv(dv){	
      indice=2;
      total=0;
      dv=0;
      validar = window.document.form.f_user.value;
      
   
 for(i=validar.length-1;i>=0;i--)
 {				
            if(validar.charCodeAt(i)>=48&&validar.charCodeAt(i)<=57)
            {					
               if(indice<=7)
               {
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;
               }
               else
               {
                  indice=2;
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;				
               }
            }
	}
	
	total=11-(total-(Math.floor(total/11)*11));						
	if(total==11) dv="0";
	if(total==10) dv="K";
	if(dv!=total){
            alert('el digito verificador es incorrecto');						
            return false;
         }		
            return true;
}
function esdv2(rut,dv){	
      indice=2;
      total=0;
      validar = rut;
      if(dv=="k")
         dv="K";
      if(validar.length<7){
		    return 2;
         }
   
 for(i=validar.length-1;i>=0;i--)
 {				
            if(validar.charCodeAt(i)>=48&&validar.charCodeAt(i)<=57)
            {					
               if(indice<=7)
               {
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;
               }
               else
               {
                  indice=2;
                  total=total+parseInt(validar.charAt(i))*indice;
                  indice++;				
               }
            }
	}
	
	total=11-(total-(Math.floor(total/11)*11));						
	if(total==11) total="0";
	if(total==10) total="K";
	//alert(dv);
	//alert(total);
	if(dv!=total){
            return 0;
         }		
            return 1;
}