/* cbe_util.js $Revision: 0.14 $
 * CBE v4.19, Cross-Browser DHTML API from Cross-Browser.com
 * Copyright (c) 2002 Michael Foster (mike@cross-browser.com)
 * Distributed under the terms of the GNU LGPL from gnu.org
*/
// visit function returns: 0 == stop, 1 == continue, 2 == skip subtree

function cbeTraverseTree(order, startNode, visitFunction, data) {
	cbeTraversePreOrder(startNode, 0, 0, visitFunction, data);
}

function cbeTraversePreOrder(node, level, branch, vFn, data) {
	var ret = vFn(node,level,branch,data);
	if (!ret) return 0;
	if (ret == 1 && node.firstChild) {
		var child = node.firstChild;
		while (child) {
			if (!level) ++branch;
			if (!cbeTraversePreOrder(child,level+1,branch,vFn,data)) return 1;
			child = child.nextSibling;
		}
	}
	return 1;
}

var cbeImageCount=0;
var cbeImageObj = new Array();
var cbeImageName = new Array();

function cbeNewImage(imgName, imgUrl, imgWidth, imgHeight) {
	var imgObj;
	if (arguments.length == 4) imgObj = new Image(imgWidth,imgHeight);
	else imgObj = new Image();
	imgObj.src = imgUrl;
	imgObj.id = imgObj.name = imgName;
	cbeImageObj[cbeImageCount] = imgObj;
	cbeImageName[cbeImageCount++] = imgName;
	return imgObj;
}

function cbeSetImage(tagImg, preloadedImg) {
	var t, p;
	if (typeof(tagImg)=='string') t = cbeGetImageByName(tagImg);
	else t = tagImg;
	if (typeof(preloadedImg)=='string') p = cbeGetImageByName(preloadedImg);
	else p = preloadedImg;
	t.src = p.src;
}

function cbeGetImageByName(imgName) {
	var i, j;
	if (document.images[imgName]) return document.images[imgName];
	if (is.nav4) {
		for (i = 0; i < cbeAll.length; i++) {
			if (cbeAll[i].ele.document) {
				for (j = 0; j < cbeAll[i].ele.document.images.length; j++) {
					if (imgName == cbeAll[i].ele.document.images[j].name) return cbeAll[i].ele.document.images[j];
				}
			}
		}
	}

	for (i = 0; i < cbeImageName.length; i++) {
		if (cbeImageName[i] == imgName) return cbeImageObj[i];
	}
	return null;
}

function cbeGetFormByName(frmName) {
	var i, j;
	if (document.forms[frmName]) return document.forms[frmName];
	if (is.nav4) {
		for (i = 0; i < cbeAll.length; i++) {
			if (cbeAll[i].ele.document) {
				for (j = 0; j < cbeAll[i].ele.document.forms.length; j++) {
					if (frmName == cbeAll[i].ele.document.forms[j].name) return cbeAll[i].ele.document.forms[j];
				}
			}
		}
	}
	return null;
}

// cookie implementations based on code from Netscape Javascript Guide
function cbeSetCookie(name, value, expire, path) {
	document.cookie = name + "=" + escape(value) + ((!expire) ? "" : ("; expires=" + expire.toGMTString())) + "; path=/";
}

function cbeGetCookie(name) {
	var value=null, search=name+"=";
	if (document.cookie.length > 0) {
		var offset = document.cookie.indexOf(search);
		if (offset != -1) {
			offset += search.length;
			var end = document.cookie.indexOf(";", offset);
			if (end == -1) end = document.cookie.length;
			value = unescape(document.cookie.substring(offset, end));
		}
	}
	return value;
}

function cbeGetURLArguments() {
	var idx = location.href.indexOf('?');
	var params = new Array();
	if (idx != -1) {
		var pairs = location.href.substring(idx+1, location.href.length).split('&');
		for (var i=0; i<pairs.length; i++) {
			nameVal = pairs[i].split('=');
			params[i] = nameVal[1];
			params[nameVal[0]] = nameVal[1];
		}
	}
	return params;
}

function cbePad(str, finalLen, padChar, left) {
	if (left) { for (var i=str.length; i<finalLen; ++i) str = padChar + str; }
	else { for (var i=str.length; i<finalLen; ++i) str += padChar; }
	return str;
}  

function cbeHexString(n, digits, prefix) {
	var p = '', n = Math.ceil(n);
	if (prefix) p = prefix;
	n = n.toString(16);
	for (var i=0; i < digits - n.length; ++i) {
		p += '0'; 
	}
	return p + n;
}

function cbeRadians(deg) { return deg * (Math.PI / 180); }

function cbeDegrees(rad) { return rad * (180 / Math.PI); }

function cbeAddDragResizeListener(cbe) {
	cbe.addEventListener('dragStart', cbeDragResizeStartListener);
	cbe.addEventListener('drag', cbeDragResizeListener);
}

function cbeRemoveDragResizeListener(cbe) {
	cbe.removeEventListener('dragStart', cbeDragResizeStartListener);
	cbe.removeEventListener('drag', cbeDragResizeListener);
}

function cbeDragResizeStartListener(e) {
	if (e.offsetX > (e.cbeCurrentTarget.width() - 20) && e.offsetY > (e.cbeCurrentTarget.height() - 20)) {
		e.cbeCurrentTarget.isResizing = true;
	}
	else e.cbeCurrentTarget.isResizing = false;
}

function cbeDragResizeListener(e) {
	if (e.cbeCurrentTarget.isResizing) e.cbeCurrentTarget.resizeBy(e.dx, e.dy);
	else e.cbeCurrentTarget.moveBy(e.dx, e.dy);
}

var cbeUtilJsLoaded = true;
// End cbe_util.js