function spam(mail,domain,zone){
	mail.toLowerCase();
	domain.toLowerCase();
	zone.toLowerCase();
	if (domain=="" && zone==""){
		zone="by";
		domain="priroda";}
	document.write('<a href="mailto:'+mail+'@'+domain+'.'+zone+'">'+mail+'@'+domain+'.'+zone+'</a>');
}
function statusbar(txt){
	window.status=txt;
}
nn4=(document.layers)? true:false;
ie4=(document.all) ? true:false;
dom=(document.createTextNode)? true : false;
function popupWindow(fileUrl, winW, winH, winN, scrollB){
	var winWidth=(winW)? winW : 740;
	var winHeight=(winH)? winH : 520;
	var winName=(winN)? winN : 'popupWin';
	var scrollBars=(scrollB)? scrollB : 'auto';
	if (nn4 || ie4 || dom){
		if (screen.width<winWidth+50){
			winWidth=screen.width-50;
			scrollbars='yes'}
		if (screen.height<winHeight+100){
			winHeight=screen.height-100;
			scrollbars='yes'}
		posX=Math.round((screen.width-winWidth)/2);
		posY=Math.round((screen.height-winHeight)/2);
		posCode=(nn4 || dom)? "screenX="+posX+",screenY="+posY : "left="+posX+",top="+posY;
	}
	else{
		posCode="";
	}
	var popupWin=window.open(fileUrl,winName,"menubar=no,toolbar=no,scrollbars="+scrollBars+",status=yes,resizable=yes,width="+winWidth+",height="+winHeight+","+posCode);
	if (popupWin) popupWin.focus();
}