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- /* dhtmllib.js Copyright 1999 by Mike Hall. Web address: http://www.brainjar.com
- Last update: February 26, 2000.
- Provides basic functions for DHTML positioned elements which will work on
- both Netscape Communicator and Internet Explorer browsers (version 4.0 and up).*/
- // Determine browser.
- var isMinNS4 = (navigator.appName.indexOf("Netscape") >= 0 &&
- parseFloat(navigator.appVersion) >= 4) ? 1 : 0;
- var isMinIE4 = (document.all) ? 1 : 0;
- var isMinIE5 = (isMinIE4 && navigator.appVersion.indexOf("5.") >= 0) ? 1 : 0;
- //-----------------------------------------------------------------------------
- // Layer visibility.
- //-----------------------------------------------------------------------------
- function hideLayer(layer) {
- if (isMinNS4)
- layer.visibility = "hide";
- if (isMinIE4)
- layer.style.visibility = "hidden";
- }
- function showLayer(layer) {
- if (isMinNS4)
- layer.visibility = "show";
- if (isMinIE4)
- layer.style.visibility = "visible";
- }
- function inheritLayer(layer) {
- if (isMinNS4)
- layer.visibility = "inherit";
- if (isMinIE4)
- layer.style.visibility = "inherit";
- }
- function getVisibility(layer) {
- if (isMinNS4) {
- if (layer.visibility == "show")
- return "visible";
- if (layer.visibility == "hide")
- return "hidden";
- return layer.visibility;
- }
- if (isMinIE4)
- return layer.style.visibility;
- return "";
- }
- //-----------------------------------------------------------------------------
- // Layer positioning.
- //-----------------------------------------------------------------------------
- function moveLayerTo(layer, x, y) {
- if (isMinNS4)
- layer.moveTo(x, y);
- if (isMinIE4) {
- layer.style.left = x;
- layer.style.top = y;
- }
- }
- function moveLayerBy(layer, dx, dy) {
- if (isMinNS4)
- layer.moveBy(dx, dy);
- if (isMinIE4) {
- layer.style.pixelLeft += dx;
- layer.style.pixelTop += dy;
- }
- }
- function getLeft(layer) {
- if (isMinNS4)
- return layer.left;
- if (isMinIE4)
- return layer.style.pixelLeft;
- return -1;
- }
- function getTop(layer) {
- if (isMinNS4)
- return layer.top;
- if (isMinIE4)
- return layer.style.pixelTop;
- return -1;
- }
- function getRight(layer) {
- if (isMinNS4)
- return layer.left + getWidth(layer);
- if (isMinIE4)
- return layer.style.pixelLeft + getWidth(layer);
- return -1;
- }
- function getBottom(layer) {
- if (isMinNS4)
- return layer.top + getHeight(layer);
- if (isMinIE4)
- return layer.style.pixelTop + getHeight(layer);
- return -1;
- }
- function getPageLeft(layer) {
- var x;
- if (isMinNS4)
- return layer.pageX;
- if (isMinIE4) {
- x = 0;
- while (layer.offsetParent != null) {
- x += layer.offsetLeft;
- layer = layer.offsetParent;
- }
- x += layer.offsetLeft;
- return x;
- }
- return -1;
- }
- function getPageTop(layer) {
- var y;
- if (isMinNS4)
- return layer.pageY;
- if (isMinIE4) {
- y = 0;
- while (layer.offsetParent != null) {
- y += layer.offsetTop;
- layer = layer.offsetParent;
- }
- y += layer.offsetTop;
- return y;
- }
- return -1;
- }
- function getWidth(layer) {
- if (isMinNS4) {
- if (layer.document.width)
- return layer.document.width;
- else
- return layer.clip.right - layer.clip.left;
- }
- if (isMinIE4) {
- if (layer.style.pixelWidth)
- return layer.style.pixelWidth;
- else
- return layer.clientWidth;
- }
- return -1;
- }
- function getHeight(layer) {
- if (isMinNS4) {
- if (layer.document.height)
- return layer.document.height;
- else
- return layer.clip.bottom - layer.clip.top;
- }
- if (isMinIE4) {
- if (layer.style.pixelHeight)
- return layer.style.pixelHeight;
- else
- return layer.clientHeight;
- }
- return -1;
- }
- function getzIndex(layer) {
- if (isMinNS4)
- return layer.zIndex;
- if (isMinIE4)
- return layer.style.zIndex;
- return -1;
- }
- function setzIndex(layer, z) {
- if (isMinNS4)
- layer.zIndex = z;
- if (isMinIE4)
- layer.style.zIndex = z;
- }
- //-----------------------------------------------------------------------------
- // Layer clipping.
- //-----------------------------------------------------------------------------
- function clipLayer(layer, clipleft, cliptop, clipright, clipbottom) {
- if (isMinNS4) {
- layer.clip.left = clipleft;
- layer.clip.top = cliptop;
- layer.clip.right = clipright;
- layer.clip.bottom = clipbottom;
- }
- if (isMinIE4)
- layer.style.clip = 'rect(' + cliptop + ' ' + clipright + ' ' + clipbottom + ' ' + clipleft +')';
- }
- function getClipLeft(layer) {
- if (isMinNS4)
- return layer.clip.left;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return 0;
- var clip = getIEClipValues(layer.style.clip);
- return(clip[3]);
- }
- return -1;
- }
- function getClipTop(layer) {
- if (isMinNS4)
- return layer.clip.top;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return 0;
- var clip = getIEClipValues(layer.style.clip);
- return clip[0];
- }
- return -1;
- }
- function getClipRight(layer) {
- if (isMinNS4)
- return layer.clip.right;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return layer.style.pixelWidth;
- var clip = getIEClipValues(layer.style.clip);
- return clip[1];
- }
- return -1;
- }
- function getClipBottom(layer) {
- if (isMinNS4)
- return layer.clip.bottom;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return layer.style.pixelHeight;
- var clip = getIEClipValues(layer.style.clip);
- return clip[2];
- }
- return -1;
- }
- function getClipWidth(layer) {
- if (isMinNS4)
- return layer.clip.width;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return layer.style.pixelWidth;
- var clip = getIEClipValues(layer.style.clip);
- return clip[1] - clip[3];
- }
- return -1;
- }
- function getClipHeight(layer) {
- if (isMinNS4)
- return layer.clip.height;
- if (isMinIE4) {
- var str = layer.style.clip;
- if (!str)
- return layer.style.pixelHeight;
- var clip = getIEClipValues(layer.style.clip);
- return clip[2] - clip[0];
- }
- return -1;
- }
- function getIEClipValues(str) {
- var clip = new Array();
- var i;
- // Parse out the clipping values for IE layers.
- i = str.indexOf("(");
- clip[0] = parseInt(str.substring(i + 1, str.length), 10);
- i = str.indexOf(" ", i + 1);
- clip[1] = parseInt(str.substring(i + 1, str.length), 10);
- i = str.indexOf(" ", i + 1);
- clip[2] = parseInt(str.substring(i + 1, str.length), 10);
- i = str.indexOf(" ", i + 1);
- clip[3] = parseInt(str.substring(i + 1, str.length), 10);
- return clip;
- }
- //-----------------------------------------------------------------------------
- // Layer scrolling.
- //-----------------------------------------------------------------------------
- function scrollLayerTo(layer, x, y, bound) {
- var dx = getClipLeft(layer) - x;
- var dy = getClipTop(layer) - y;
- scrollLayerBy(layer, -dx, -dy, bound);
- }
- function scrollLayerBy(layer, dx, dy, bound) {
- var cl = getClipLeft(layer);
- var ct = getClipTop(layer);
- var cr = getClipRight(layer);
- var cb = getClipBottom(layer);
- if (bound) {
- if (cl + dx < 0)
- dx = -cl;
- else if (cr + dx > getWidth(layer))
- dx = getWidth(layer) - cr;
- if (ct + dy < 0)
- dy = -ct;
- else if (cb + dy > getHeight(layer))
- dy = getHeight(layer) - cb;
- }
- clipLayer(layer, cl + dx, ct + dy, cr + dx, cb + dy);
- moveLayerBy(layer, -dx, -dy);
- }
- //-----------------------------------------------------------------------------
- // Layer background.
- //-----------------------------------------------------------------------------
- function setBgColor(layer, color) {
- if (isMinNS4)
- layer.bgColor = color;
- if (isMinIE4)
- layer.style.backgroundColor = color;
- }
- function setBgImage(layer, src) {
- if (isMinNS4)
- layer.background.src = src;
- if (isMinIE4)
- layer.style.backgroundImage = "url(" + src + ")";
- }
- //-----------------------------------------------------------------------------
- // Layer utilities.
- //-----------------------------------------------------------------------------
- function getLayer(name) {
- if (isMinNS4)
- return findLayer(name, document);
- if (isMinIE4)
- return eval('document.all.' + name);
- return null;
- }
- function findLayer(name, doc) {
- var i, layer;
- for (i = 0; i < doc.layers.length; i++) {
- layer = doc.layers[i];
- if (layer.name == name)
- return layer;
- if (layer.document.layers.length > 0)
- if ((layer = findLayer(name, layer.document)) != null)
- return layer;
- }
- return null;
- }
- //-----------------------------------------------------------------------------
- // Image utilities.
- //-----------------------------------------------------------------------------
- function getImage(name) {
- if (isMinNS4) {
- return findImage(name, document);
- }
- if (isMinIE4)
- return eval('document.all.' + name);
- return null;
- }
- function findImage(name, doc) {
- var i, img;
- for (i = 0; i < doc.images.length; i++)
- if (doc.images[i].name == name)
- return doc.images[i];
- for (i = 0; i < doc.layers.length; i++)
- if ((img = findImage(name, doc.layers[i].document)) != null) {
- img.container = doc.layers[i];
- return img;
- }
- return null;
- }
- function getImagePageLeft(img) {
- var x, obj;
- if (isMinNS4) {
- if (img.container != null)
- return img.container.pageX + img.x;
- else
- return img.x;
- }
- if (isMinIE4) {
- x = 0;
- obj = img;
- while (obj.offsetParent != null) {
- x += obj.offsetLeft;
- obj = obj.offsetParent;
- }
- x += obj.offsetLeft;
- return x;
- }
- return -1;
- }
- function getImagePageTop(img) {
- var y, obj;
- if (isMinNS4) {
- if (img.container != null)
- return img.container.pageY + img.y;
- else
- return img.y;
- }
- if (isMinIE4) {
- y = 0;
- obj = img;
- while (obj.offsetParent != null) {
- y += obj.offsetTop;
- obj = obj.offsetParent;
- }
- y += obj.offsetTop;
- return y;
- }
- return -1;
- }
- //-----------------------------------------------------------------------------
- // Window and page properties.
- //-----------------------------------------------------------------------------
- function getWindowWidth() {
- if (isMinNS4)
- return window.innerWidth;
- if (isMinIE4)
- return document.body.clientWidth;
- return -1;
- }
- function getWindowHeight() {
- if (isMinNS4)
- return window.innerHeight;
- if (isMinIE4)
- return document.body.clientHeight;
- return -1;
- }
- function getPageWidth() {
- if (isMinNS4)
- return document.width;
- if (isMinIE4)
- return document.body.scrollWidth;
- return -1;
- }
- function getPageHeight() {
- if (isMinNS4)
- return document.height;
- if (isMinIE4)
- return document.body.scrollHeight;
- return -1;
- }
- function getPageScrollX() {
- if (isMinNS4)
- return window.pageXOffset;
- if (isMinIE4)
- return document.body.scrollLeft;
- return -1;
- }
- function getPageScrollY() {
- if (isMinNS4)
- return window.pageYOffset;
- if (isMinIE4)
- return document.body.scrollTop;
- return -1;
- }