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applications/htmlroot/overlib_anchor.js  view on Meta::CPAN

		if (ar[k] ==  NOANCHORWARN) { eval(pf + 'noanchorwarn = (' + pf + 'noanchorwarn==1) ? 0 : 1'); return k; }
		if (ar[k] ==  ANCHORALIGN) { k = opt_MULTIPLEARGS(++k, ar, (pf + 'anchoralign'));  return k; }
	}

	return -1;
}


///////
//  FUNCTION WHICH CHECKS FOR THE EXISTENCE OF A REFERENCE MARKER
///////
function checkAnchorObject() {
	var w = o3_anchor;

	if (w) {
		if (!(mrkObj = getAnchorObjectRef(w))) {
			if (o3_noanchorwarn) {
				alert('WARNING!  Reference mark "' + w + '" not found.');
				return false;
			} else w = '';
		}
	}

	return true;
}

///////
// EXTERNAL SUPPORT FUNCTIONS TO HANDLE ANCHOR PROPERTIES
///////

// Horizontal placement routine with anchors
function anchorHorizontal(browserWidth, horizontalScrollAmount, widthFix) {
	var hasAnchor = (typeof o3_anchor != 'undefined' && o3_anchor);
	if (!hasAnchor) return void(0);

	// set o3_relx for follow scroll if defined
	if (typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_relx = rmrkPosition[0];

	return rmrkPosition[0];
}

// Vertical placement routine with anchors
function anchorVertical(browserHeight,verticalScrollAmount) {
	var hasAnchor = (typeof o3_anchor != 'undefined' && o3_anchor);	
	if (!hasAnchor) return void(0);

	// set o3_rely for follow scroll if defined
	if (typeof o3_followscroll != 'undefined' && o3_followscroll && o3_sticky) o3_rely = rmrkPosition[1];

	return rmrkPosition[1];
}

// Stub function for the runHook routine
function anchorPreface() {
	if (!mrkObj) return;
	rmrkPosition = getAnchorLocation(mrkObj);
}

// Get Reference Mark object 
function getAnchorObjectRef(aObj) {
	return getRefById(aObj, o3_frame.document) || getRefByName(aObj, o3_frame.document)
}

// Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
function getAnchorLocation(objRef){
	var mkObj, of, offsets, mlyr
	
	mkObj = mlyr = objRef
	offsets = [o3_anchorx, o3_anchory]
	
	if (document.layers){
		if (typeof mlyr.length != 'undefined' &&  mlyr.length > 1) {
				mkObj = mlyr[0]
				offsets[0] += mlyr[0].x + mlyr[1].pageX
				offsets[1] += mlyr[0].y + mlyr[1].pageY
			} else {
				if(mlyr.toString().indexOf('Image') != -1 || mlyr.toString().indexOf('Anchor') != -1){
					offsets[0] += mlyr.x
					offsets[1] += mlyr.y
				} else {
					offsets[0] += mlyr.pageX
					offsets[1] += mlyr.pageY
				}
			}          
	} else {
		offsets[0] += pageLocation(mlyr, 'Left')
		offsets[1] += pageLocation(mlyr, 'Top')
	}
	
	of = getAnchorOffsets(mkObj)
	
	if (typeof o3_dragimg != 'undefined' &&  o3_dragimg) {
		olImgLeft = offsets[0];
		olImgTop = offsets[1];
	}
	
	offsets[0] += of[0]                    
	offsets[1] += of[1]
	
	if (typeof o3_dragimg != 'undefined' &&  o3_dragimg) {
		olImgRight = offsets[0]; 
		olImgBottom = offsets[1];
		return;
	}
	
	return offsets;
}

// Adapted to overlib from jwin by Jason Anderson -- http://www.jwinlib.com
function getAnchorOffsets(mkObj){
	var fx = fy = 0,  mp, puc, mkAry, sx = sy = 0, w = o3_anchoralign  
	var mW = mH = pW = pH = 0
	var off = [0, 0]

	mkAry = w.split(',');

	if (mkAry.length < 3) {
		mp = mkAry[0].toUpperCase();
		puc = (mkAry.length == 1) ? mp : mkAry[1].toUpperCase();
	} else if (mkAry.length == 3) {
		if (!isNaN(mkAry[0])) {