function validatefr(res){
var status=true;

if (res.D1.value==""){
	status=false;
	alert("Please fill your arrival month");
}
else if (res.D2.value==""){
	status=false;
	alert("Please fill your arrival day");
}

else if (res.D7.value==""){
	status=false;
alert("Please fill your departure month");
}
else if (res.D8.value==""){
	status=false;
alert("Please fill your departure Day");
}

else if (res.D3.value==""){
	status=false;
alert("arrival Year cannot be empty");
}
else if (res.D2.value==""){
	status=false;
	alert("Please fill your arrival day");
}

else if (res.D3.value == res.D9.value){
	if(res.D1.value==res.D7.value){
	   if(res.D2.value==res.D8.value){
	     status=false;
		 alert("date cannot be the same");
		 }
	   else if(res.D2.value > res.D8.value){
	   status=false;
	   alert("arrival date cannot be greater than departure date");
	   }
	   else if (res.D2.value < res.D8.value){
	   status=true;
	   }
	 }	
	   else if(res.D1.value > res.D7.value){
		status=false;
		alert("arrival month cannot be greater than departure month");
	
	   }
	   else if(res.D1.value < res.D7.value){
	   status=true;
	   }
}
else if (res.D3.value > res.D9.value){
status=false;
alert("arrival year cannot be greater than departure year");
}
else if (res.D3.value < res.D9.value){
status=true;

}


	return status;
}