// 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;
}