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=yes,toolbar=no,scrollbars=" + scrollBars + ",status=yes,resizable=yes,width=" + winWidth + ",height=" + winHeight + "," + posCode);
	if (popupWin) popupWin.focus();
}

function unescape_opera(text) {
	if(typeof(RegExp) == 'function') {
		re = /quot;/g;
		newstr=text.replace(re, '');
		re = /&/g;
		return newstr.replace(re, '"');
	}
	else return text;
}

function unescape_nbsp(text) {
	if(typeof(RegExp) == 'function') {
		re = /&nbsp;/g;
		newstr=text.replace(re, ' ');
		return newstr;
	}
	else return text;
}