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-// ===================================================================
-// Author: Matt Kruse <matt@mattkruse.com>
-// WWW: http://www.mattkruse.com/
-//
-// NOTICE: You may use this code for any purpose, commercial or
-// private, without any further permission from the author. You may
-// remove this notice from your final code if you wish, however it is
-// appreciated by the author if at least my web site address is kept.
-//
-// You may *NOT* re-distribute this code in any way except through its
-// use. That means, you can include it in your product, or your web
-// site, or any other form where the code is actually being used. You
-// may not put the plain javascript up on your site for download or
-// include it in your javascript libraries for download.
-// If you wish to share this code with others, please just point them
-// to the URL instead.
-// Please DO NOT link directly to my .js files from your site. Copy
-// the files to your server and use them there. Thank you.
-// ===================================================================
-
-/*
-AnchorPosition.js
-Author: Matt Kruse
-Last modified: 10/11/02
-
-DESCRIPTION: These functions find the position of an <A> tag in a document,
-so other elements can be positioned relative to it.
-
-COMPATABILITY: Netscape 4.x,6.x,Mozilla, IE 5.x,6.x on Windows. Some small
-positioning errors - usually with Window positioning - occur on the
-Macintosh platform.
-
-FUNCTIONS:
-getAnchorPosition(anchorname)
- Returns an Object() having .x and .y properties of the pixel coordinates
- of the upper-left corner of the anchor. Position is relative to the PAGE.
-
-getAnchorWindowPosition(anchorname)
- Returns an Object() having .x and .y properties of the pixel coordinates
- of the upper-left corner of the anchor, relative to the WHOLE SCREEN.
-
-NOTES:
-
-1) For popping up separate browser windows, use getAnchorWindowPosition.
- Otherwise, use getAnchorPosition
-
-2) Your anchor tag MUST contain both NAME and ID attributes which are the
- same. For example:
- <A NAME="test" ID="test"> </A>
-
-3) There must be at least a space between <A> </A> for IE5.5 to see the
- anchor tag correctly. Do not do <A></A> with no space.
-*/
-
-// getAnchorPosition(anchorname)
-// This function returns an object having .x and .y properties which are the coordinates
-// of the named anchor, relative to the page.
-function getAnchorPosition(anchorname) {
- // This function will return an Object with x and y properties
- var useWindow=false;
- var coordinates=new Object();
- var x=0,y=0;
- // Browser capability sniffing
- var use_gebi=false, use_css=false, use_layers=false;
- if (document.getElementById) { use_gebi=true; }
- else if (document.all) { use_css=true; }
- else if (document.layers) { use_layers=true; }
- // Logic to find position
- if (use_gebi && document.all) {
- x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
- y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
- }
- else if (use_gebi) {
- var o=document.getElementById(anchorname);
- x=AnchorPosition_getPageOffsetLeft(o);
- y=AnchorPosition_getPageOffsetTop(o);
- }
- else if (use_css) {
- x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);
- y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);
- }
- else if (use_layers) {
- var found=0;
- for (var i=0; i<document.anchors.length; i++) {
- if (document.anchors[i].name==anchorname) { found=1; break; }
- }
- if (found==0) {
- coordinates.x=0; coordinates.y=0; return coordinates;
- }
- x=document.anchors[i].x;
- y=document.anchors[i].y;
- }
- else {
- coordinates.x=0; coordinates.y=0; return coordinates;
- }
- coordinates.x=x;
- coordinates.y=y;
- return coordinates;
- }
-
-// getAnchorWindowPosition(anchorname)
-// This function returns an object having .x and .y properties which are the coordinates
-// of the named anchor, relative to the window
-function getAnchorWindowPosition(anchorname) {
- var coordinates=getAnchorPosition(anchorname);
- var x=0;
- var y=0;
- if (document.getElementById) {
- if (isNaN(window.screenX)) {
- x=coordinates.x-document.body.scrollLeft+window.screenLeft;
- y=coordinates.y-document.body.scrollTop+window.screenTop;
- }
- else {
- x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;
- y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;
- }
- }
- else if (document.all) {
- x=coordinates.x-document.body.scrollLeft+window.screenLeft;
- y=coordinates.y-document.body.scrollTop+window.screenTop;
- }
- else if (document.layers) {
- x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;
- y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;
- }
- coordinates.x=x;
- coordinates.y=y;
- return coordinates;
- }
-
-// Functions for IE to get position of an object
-function AnchorPosition_getPageOffsetLeft (el) {
- var ol=el.offsetLeft;
- while ((el=el.offsetParent) != null) { ol += el.offsetLeft; }
- return ol;
- }
-function AnchorPosition_getWindowOffsetLeft (el) {
- return AnchorPosition_getPageOffsetLeft(el)-document.body.scrollLeft;
- }
-function AnchorPosition_getPageOffsetTop (el) {
- var ot=el.offsetTop;
- while((el=el.offsetParent) != null) { ot += el.offsetTop; }
- return ot;
- }
-function AnchorPosition_getWindowOffsetTop (el) {
- return AnchorPosition_getPageOffsetTop(el)-document.body.scrollTop;
- }