function get_browser() {
	var bver=null;
	if(document.layers) {
		bver='nn4';
	}
	else if(document.all) {
		if(window.opera) {
			bver='opera';
		}
		else {
			bver='ie';
		}
	}
	else if(document.getElementById) {
		if (navigator.userAgent.indexOf('Gecko')>-1) {
			bver='mozilla';
		}
		else {
			bver='nn6';
		}
	}
	return bver;
}

function preloadImg(file) {
 	img = new Image();
	img.src = file;
}

function ShowPNG(filename,w,h) {
	BROWSER_ID=get_browser();
	if (BROWSER_ID=='ie') {
		document.write('<img src="/img/transp.gif" height="' + h + '" width="' + w + '" style="filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src=/img/' + filename + '.png);" align="top" border="0">');
	}
	else {
		document.write('<img src="/img/' + filename + '.png" height="' + h + '" width="' + w + '" border="0">');
	}
}

function NewWindow(w,v,s,d){
	eval("window.open('"+v+"','"+w+"','height="+s+",width="+d+",left=0,top=0,status=no,location=no,toolbar=no,directories=no,menubar=no');");
}