//Mozilla Firefox Netscape 6,7
var isMoz=navigator.userAgent.indexOf('Gecko') != -1;
if( isMoz ){
	temp_start = navigator.userAgent.indexOf( 'Gecko/' ) + ('Gecko').length + 1;
	geckoVersion = navigator.userAgent.substr( temp_start, 8 );
	var isOldGecko = geckoVersion*1 < 20060111;
//	document.write(( geckoVersion * 1 ) + " " + isOldGecko);
}
//Opera
var isOpera=false;
for(var i=0; i<navigator.plugins.length; i++){if( (navigator.plugins[i].name.toLowerCase()).indexOf("opera")!=-1 )isOpera = true;}
//Internet Explorer
var isIE = (document.all && !isOpera ? true : false);

function getobject(obj){ //オブジェクトを返す
	if(isIE && !isOpera) return document.all(obj);
	else if(isOpera) return document.getElementById(obj);
	if(isMoz) return document.getElementById(obj);
}