function valida() {
var rut = form1.rut.value;
var digit = form1.dig.value;
var count = 0;
var count2 = 0;
var factor = 2;
var suma = 0;
var sum = 0;
var digito = 0;
var Valor_para_rut;
count2 = rut.length - 1;
//alert(rut)
//alert(digit)
if(rut!='' && digit!='' ){

				while(count < rut.length) {
			
					sum = factor * (parseInt(rut.substr(count2,1)));
					suma = suma + sum;
					sum = 0;
			
					count = count + 1;
					count2 = count2 - 1;
					factor = factor + 1;
			
					if(factor > 7) {
						factor=2;
					}
			
				}
			digito = 11 - (suma % 11);
			
			if (digito == 11) {
				digito = 0;
			}
			if (digito == 10) {
				digito = "k";
			}
			
			if (digit != digito)
			{
				 alert("Ingresaste un RUT equivocado, vuelve a ingresarlo!.");
				 form1.rut.focus();
				 form1.rut.value="";
				 form1.dig.value="";
				 return false;
			}else{
			   // document.form.cachito.value="1"
			//	document.form.action = pagina;
			//	document.form.submit();
			}
/*}else{
	alert('Debes Ingresar tu RUT y Digito Verificador');
	return false;*/
}			
}