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 winWidth = winW;
	var winHeight = winH;
	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;
}



//
// Copyright (c) Art. Lebedev Studio | http://www.artlebedev.ru/
// Author - Leechy | leechy@design.ru
//


/*****************************
**   Event listeners
******************************/

function addEvent(objElement, strEventType, ptrEventFunc) {
	if (objElement.addEventListener) objElement.addEventListener(strEventType, ptrEventFunc, false);
		else if (objElement.attachEvent) objElement.attachEvent('on' + strEventType, ptrEventFunc);
}

function removeEvent(objElement, strEventType, ptrEventFunc) {
	if (objElement.removeEventListener) objElement.removeEventListener(strEventType, ptrEventFunc, false);
		else if (objElement.detachEvent) objElement.detachEvent('on' + strEventType, ptrEventFunc);
}


/*****************************
**   Common class methods
******************************/

function switchClass( objNode, strCurrClass, strNewClass ) {
	if ( matchClass( objNode, strNewClass ) ) replaceClass( objNode, strCurrClass, strNewClass );
		else replaceClass( objNode, strNewClass, strCurrClass );
}

function removeClass( objNode, strCurrClass ) {
	replaceClass( objNode, '', strCurrClass );
}

function addClass( objNode, strNewClass ) {
	replaceClass( objNode, strNewClass, '' );
}

function replaceClass( objNode, strNewClass, strCurrClass ) {
	var strOldClass = strNewClass;
	if ( strCurrClass && strCurrClass.length ){
		strCurrClass = strCurrClass.replace( /\s+(\S)/g, '|$1' );
		if ( strOldClass.length ) strOldClass += '|';
		strOldClass += strCurrClass;
	}
	objNode.className = objNode.className.replace( new RegExp('(^|\\s+)(' + strOldClass + ')($|\\s+)', 'g'), '$1' );
	objNode.className += ( (objNode.className.length)? ' ' : '' ) + strNewClass;
}

function matchClass( objNode, strCurrClass ) {
	return ( objNode.className.length && objNode.className.match( new RegExp('(^|\\s+)(' + strCurrClass + ')($|\\s+)') ) );
}


/*****************************
**   Common cookie methods
******************************/

// Functions from Netscape's JavaScript Guide
// http://developer.netscape.com/docs/manuals/js/client/jsguide/

function setCookie(name, value, expire, path) {
	document.cookie = name + '=' + escape(value)
		+ ((expire == null)? '' : ('; expires=' + expire.toGMTString()))
		+ ((path == null)? '' : ('; path=' + path));
}

function getCookie(Name) {
	var search = Name + '='
	if (document.cookie.length > 0) { // if there are any cookies
		offset = document.cookie.indexOf(search) 
		if (offset != -1) { // if cookie exists 
			offset += search.length 
			// set index of beginning of value
			end = document.cookie.indexOf(';', offset) 
			// set index of end of cookie value
			if (end == -1) 
				end = document.cookie.length
			return unescape(document.cookie.substring(offset, end))
		}
	}
	return '';
}


/*****************************
**   Some other methods
******************************/

function getText_value( objNode ) {
	var strValue = new String();
	if ( objNode.childNodes.length ) {
		for ( var i = 0; i < objNode.childNodes.length; i++ ) {
			if ( objNode.childNodes[i].nodeType == 1 ) strValue += getTextValue( objNode.childNodes[i] );
			if ( objNode.childNodes[i].nodeType == 3 ) strValue += objNode.childNodes[i].nodeValue;
		}
	}
	return strValue;
}

function dalert (sText) {
	document.getElementById('dalert').innerHTML = sText;
}


function getElement_position( objNode ) {
	this.width = objNode.offsetWidth;
	this.height = objNode.offsetHeight;
	this.x = this.y = 0;
	do {
		this.x += objNode.offsetLeft;
		this.y += objNode.offsetTop;
	} while ( objNode = objNode.offsetParent );
	
	return this;
}