function openWindow(url,w,h) {
	window.open(url, "_tree", "toolbar=no,width="+w+",height="+h+",scrollbars=yes,resizable=yes");
}

function resize_by_images() {
	var isNN,isIE;

	if (parseInt(navigator.appVersion.charAt(0))>=4) {
		isNN=(navigator.appName=="Netscape")?1:0;
		isIE=(navigator.appName.indexOf("Microsoft")!=-1)?1:0;
	}

	var	width = 100;
	var height = 100;
	window.resizeTo(width,height);

	if (isIE) {
		width = 100 - (document.body.clientWidth - document.images[0].width);
		height = 100 - (document.body.clientHeight - document.images[0].height);
	}

	if (isNN){
		width = document.images['showfile'].width;
		height = document.images['showfile'].height;
	}

	window.resizeTo(width,height);
}