function validarut(nRut) {
//var nRut=document.ingreso.txtrut.value;
var xRut="";
var xGuion="";
var xSinGuion=0;
var xRutCompleto="";
var xDigito="";
var xFactor=2;
var xContador=0;
var xSuma=0;
var xTotal=0;

	for(I=0;I<=nRut.length-1;I++) {
		xGuion=nRut.charAt(I);
 		if(xGuion!="-") {
    	   xRutCompleto=xRutCompleto+nRut.charAt(I);	    	
		}
		else {	
		   xSinGuion++;		
		}
	}

	xDigito=xRutCompleto.charAt(xRutCompleto.length-1);
	xRutCompleto=xRutCompleto.substr(0,xRutCompleto.length-1);
	xContador=xRutCompleto.length;

	while(xContador>=1) {        
		xSuma+=(xFactor*xRutCompleto.charAt(xContador-1));
		xFactor++;
		if (xFactor>7){
			xFactor=2;
		}	
	xContador--	
	}	
	xTotal = (11-(xSuma-(11*(parseInt(xSuma/11)))));
	if(xTotal==11){
	   xTotal=0;	
	}
	if(xTotal==10){
	   xTotal="K";
	   if(xDigito.toUpperCase()==xTotal){
	   	  if(xSinGuion==0){
		    xRut=xRutCompleto+"-"+xDigito.toUpperCase();
		  } else {	   	
            xRut=nRut.toUpperCase(); 
		  }			  
		  if(xRut.length==9){
				 xRut="0"+xRut;
		  }
		  if(xRut.length==8){
				 xRut="00"+xRut;
		  }
		  document.ingreso.txtrut.value=xRut;
    	  document.ingreso.txtrut.focus();		  
		  return true;
	   }
	   else {
	   		alert("RUT no Valido");
			document.ingreso.txtrut.focus();
  			return false;
	   }	
	}

    if(xDigito==xTotal){
	   if(xSinGuion==0){
		 xRut=xRutCompleto+"-"+xDigito.toUpperCase(); 
	   } else {
		   xRut=nRut.toUpperCase();
	   }	
	   if(xRut.length==9){
		 	xRut="0"+xRut;
	   }
	   if(xRut.length==8){
			 xRut="00"+xRut;
	   }
	   document.ingreso.txtrut.value=xRut;		  
	   document.ingreso.txtrut.focus();
       return true;   
   } else {
	   alert("RUT no Valido");
	   document.ingreso.txtrut.focus();
       return false;
   }
//document.ingreso.txtrut.value="hola";


}

function ValidaFecha(myfield,e){
	
	var keycode;
	
	if(window.event){
		keycode = window.event.keyCode;
	} else{
		if(e){
			keycode = e.which;
		} else{
			return true;
		}
	}
	if(((keycode>47)&&(keycode<58))||(keycode==8)||(keycode==13)){
		if(myfield.value.length==2||myfield.value.length==5){
			myfield.value = myfield.value + "/";
		}
		return true;
	} else{
		return false;
	}

}

function chequeafecha(xfecha)
{
	
	var datefield = xfecha;	
	if (verficafecha(xfecha) == false) {				
		return false;
	} else {	
		return true;
	}
	
}

function verficafecha(nfecha)
{

	var strDatestyle = "UE"; 
	var booFound     = false;
	
	var strSeparatorArray = new Array("-"," ","/",".");
	var strMonthArray     = new Array(12);
	var strDayArray       = new Array(9);
	
	var strDate;
	var strDateArray;
	var strDay;
	var strMonth;
	var strYear;
	var intday;
	var intMonth;
	var intYear;	
	var intElementNr;
	
	var err = 0;

	strMonthArray[0]  = "01";
	strMonthArray[1]  = "02";
	strMonthArray[2]  = "03";
	strMonthArray[3]  = "04";
	strMonthArray[4]  = "05";
	strMonthArray[5]  = "06";
	strMonthArray[6]  = "07";
	strMonthArray[7]  = "08";
	strMonthArray[8]  = "09";
	strMonthArray[9]  = "10";
	strMonthArray[10] = "11";
	strMonthArray[11] = "12";        
	
        strDate = nfecha;

	strDayArray[0] = "01";
	strDayArray[1] = "02";
	strDayArray[2] = "03";
	strDayArray[3] = "04";
	strDayArray[4] = "05";
	strDayArray[5] = "06";
	strDayArray[6] = "07";
	strDayArray[7] = "08";
	strDayArray[8] = "09";

	if (strDate.length < 1) {
		return true;
	}

	for (intElementNr = 0; intElementNr < strSeparatorArray.length; intElementNr++) {

		if (strDate.indexOf(strSeparatorArray[intElementNr]) != -1) {
			strDateArray = strDate.split(strSeparatorArray[intElementNr]);
			if (strDateArray.length != 3) {
				err = 1;
				return false;
			} else {
				strDay = strDateArray[0];
				strMonth = strDateArray[1];
				strYear = strDateArray[2];
			}
			booFound = true;
	   }
	   
	}

	if (booFound == false) {
		if (strDate.length>5) {
			strDay = strDate.substr(0, 2);
			strMonth = strDate.substr(2, 2);
			strYear = strDate.substr(4);
		} else {
			return false
		}
	}

	if (strYear.length == 2) {
		strYear = '20' + strYear;
	}

	intday = parseInt(strDay, 10);

	if (isNaN(intday)) {
		err = 2;
		return false;
	}

	intMonth = parseInt(strMonth, 10);

	if (isNaN(intMonth)) {
		for (i = 0;i<12;i++) {
			if (strMonth.toUpperCase() == strMonthArray[i].toUpperCase()) {
				intMonth = i+1;
				strMonth = strMonthArray[i];
				i = 12;
			}
		}
		if (isNaN(intMonth)) {
			err = 3;
			return false;
		}
	}

	intYear = parseInt(strYear, 10);

	if (isNaN(intYear)) {
		err = 4;
		return false;
	}

	if (intMonth>12 || intMonth<1) {
		err = 5;
		return false;
	}

	if ((intMonth == 1 || intMonth == 3 || intMonth == 5 || intMonth == 7 || intMonth == 8 || intMonth == 10 || intMonth == 12) && (intday > 31 || intday < 1)) {
		err = 6;
		return false;
	}

	if ((intMonth == 4 || intMonth == 6 || intMonth == 9 || intMonth == 11) && (intday > 30 || intday < 1)) {
		err = 7;
		return false;
	}

	if (intMonth == 2) {
		if (intday < 1) {
			err = 8;
			return false;
		}
		if (LeapYear(intYear) == true) {
			if (intday > 29) {
				err = 9;
				return false;
			}
		} else {
			if (intday > 28) {
				err = 10;
				return false;
			}
		}
	}

	if (intday < 10) {
		strDay = strDayArray[intday-1]
	} else {
		strDay = intday
	}

	return true;
	
}

function LeapYear(intYear) 
{
	if (intYear % 100 == 0) {
		if (intYear % 400 == 0) { return true; }
		} else {
		if ((intYear % 4) == 0) { return true; }
	}
	return false;
	
}


function validaemail(xemail)
{
    var xbusca="";
    var cont=0;
    var xvalor=0;
    while(cont<=xemail.length-1) {
       xbusca=xemail.charAt(cont);
       if(xbusca=="@") {
          xvalor++;
          break;
       } 
       cont++
    }
    while(cont<=xemail.length-1) {
       xbusca=xemail.charAt(cont);
       if(xbusca==".") {
          xvalor++;
          break;
       } 
       cont++
    }
   if(xvalor==2)
     return true;
   else
     return false;
}