// ---------------------------------------------------------------- //
//  自動フリガナ入力フォーム - JavaScript
// ---------------------------------------------------------------- //

var prevval = "";       // 最後の入力状況

//eve	= eventオブジェクト
//elem	= 入力欄オブジェクト
//dst	= カナ欄ID
function get_ruby( eve, elem, dst ) {
	var newval = elem.value;
	if ( prevval == newval ) return;

	if ( newval == "" ) {
		document.getElementById(dst).value = "";
		prevval = "";
		return;
	}
//	if(eve.keyCode<65 || eve.keyCode>90){return;}
	if(eve.keyCode<48 || eve.keyCode>226){return;}

	var addval = newval;
	for( var i=prevval.length; i>=0; i-- ) {
		if ( newval.substr(0,i) == prevval.substr(0,i) ) {
			addval = newval.substr(i);
			break;
		}
	}
	prevval = newval;
	var addruby = addval.replace( /[^ 　ぁあ-んァー]/g, "" );
	if ( addruby == "" ) return;
	document.getElementById(dst).value += addruby;
}

// ---------------------------------------------------------------- //