//agecheck



function agecheck()

{

   local_t = new Date();

   local_m = local_t.getMonth()+1;

   local_d = local_t.getDate();

   local_y = local_t.getYear();



   if(local_y < 1900){

     local_y += 1900;

	}



   user_m = Number(document.checkForm.month.value);

   user_d = Number(document.checkForm.day.value);

   user_y = Number(document.checkForm.year.value);



  if(isNaN(user_m)||isNaN(user_d)||isNaN(user_y)){

    location.reload();

    return;

    }



  if((user_d==0)||(user_d>31)||(user_m==0)||(user_m>12)){

    location.reload();

    return;

      }



   age = local_y - user_y;



    if(local_m < user_m){

      age--;

    }

    else{

      if((local_m = user_m) && (local_d < user_d)){

         age--;

         }

    }



//  alert("your age is "+age+" years old");



    ninja=getCookie("NINJA");



  if(age>17){

    location.href="home.html";

    ninja=18;

    }

   else{

    location.replace("sorry.html");

    ninja=17;

   }



setCookie("NINJA",ninja);



}





function getCookie(key){

	tmp=document.cookie+";";

	tmp1=tmp.indexOf(key,0);

	if(tmp1 != -1){

		tmp=tmp.substring(tmp1,tmp.length);

		start=tmp.indexOf("=",0)+1;

		end=tmp.indexOf(";",start);

		return(unescape(tmp.substring(start,end)));

	}

	return("");

}



function setCookie(key,val){

	tmp=key+"="+escape(val)+";";

	document.cookie=tmp;

}





//agegate version

function checkGATE()

{

  ninja=getCookie("NINJA");



	if(ninja==""){

    return;

	}

	if(ninja == 17){

    location.href="sorry.html";

	return;

	}

	if(ninja == 18){

	location.href="home.html";

    return;

	}

}



//landing version

function checkOK()

{

  ninja=getCookie("NINJA");



	if(ninja==""){

    location.href="index.html";

    return;

	}

	if(ninja == 17){

    location.href="sorry.html";

	return;

	}

	if(ninja == 18){

    return;

	}

}



//sorry version

function checkNG()

{

  ninja=getCookie("NINJA");



	if(ninja==""){

	location.href="index.html";

    return;

	}

	if(ninja == 17){

	return;

	}

	if(ninja == 18){

	location.href="home.html";

    return;

	}

}



function init(){

	var m = document.checkForm.month;

	var d = document.checkForm.day;

	var y = document.checkForm.year;

	

	m.onfocus = d.onfocus = y.onfocus = function(){

		if( this.value == this.defaultValue )	this.value = "";

	}

	

	m.onblur = d.onblur = y.onblur = function(){

		if( this.value == "" )	this.value = this.defaultValue;

	}

}