// +++++++++++++++ check browser +++++++++++++++

var myBrowser;
if(navigator.platform){
	myBrowser=new myBrowser((document.getElementById != null),(navigator.platform.indexOf('Win32') != -1),(navigator.appName.indexOf('Microsoft') != -1));
}
function myBrowser(version,platform,type){
	this.version=version;	//trueかfalse,DOM使用可能ブラウザ(IE4以上,NN6以上)ならtrue
	this.platform=platform;	//trueかfalse,Win32ならtrue
	this.type=type;		//trueかfalse,IEならtrue
}