function gotopage() {
var p = document.wanav.gotopg.value;
var strlen = p.length; 
var strmsg = "Please input a valid page number (cover, map, i-x, 1-528, map2, 529-545)";
var intinternalp = 1;
if (strlen=0) {
   alert(strmsg);
	return(false);
	}
var intp = parseInt(p);
if (isNaN(intp)) {
     plower = p.toLowerCase();
     switch (plower) {
	     case "cover": intinternalp = 1; break;
		  case "map": intinternalp = 2; break;
		  case "i": intinternalp = 3; break;
		  case "ii": intinternalp = 4; break;
		  case "iii": intinternalp = 5; break;
		  case "iv": intinternalp = 6; break;
		  case "v": intinternalp = 7; break;
		  case "vi": intinternalp = 8; break;
		  case "vii": intinternalp = 9; break;
		  case "viii": intinternalp = 10; break;
		  case "ix": intinternalp = 11; break;
		  case "x": intinternalp = 12; break;
		  case "map2": intinternalp = 541; break;
		  default:
	     alert(strmsg);
	     return(false);
	 }	 
}
else {
     intinternalp = intp+12;
     if (intp>528) {
	     intinternalp = intinternalp+1;
	 }	 

}
if ((intinternalp>0)&&(intinternalp<=558)) {
	 document.location.href="bookread.php?loc=WaddellsAnnals&pgid=" + intinternalp;
}
else{
   alert(strmsg);
	return(false);
}
return(true);
}