/*
mouseover viewer code
*/

var offsetfrommouse=[15,15]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var currentimageheight = 275;	// maximum image height.
var currentimagewidth = 175;	// default image width.

if (document.getElementById || document.all){
	document.write('<div id="trailimageid">');
	document.write('</div>');
}

function gettrailobj(){
if (document.getElementById)
return document.getElementById("trailimageid").style
else if (document.all)
return document.all.trailimagid.style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("trailimageid")
else if (document.all)
return document.all.trailimagid
}


function truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function showtrail(imagename,title,description,width,height){

	if (height > 0){
		currentimageheight = height;
	}
	
	if (width > 0){
		currentimagewidth = width;
	}

	document.onmousemove=followmouse;
	
	newHTML = '<div style="padding: 5px; background-color: #666666; border: 1px solid #333333; width: ' + (currentimagewidth + 3) + 'px;">';
	
	if (title != '') {
	newHTML = newHTML + '<span class="bodyl"><b>' + title + '</b></span><br>';
	}
	newHTML = newHTML + '<div align="center" style="padding: 8px 2px 2px 2px;"><img src="' + imagename + '" border="0"></div>';

	newHTML = newHTML + '</div>';

	gettrailobjnostyle().innerHTML = newHTML;

	gettrailobj().visibility="hidden"
	// gettrailobj().visibility="visible";

}


function hidetrail(){
	gettrailobj().visibility="hidden"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

function followmouse(e){

	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(document.body.offsetHeight, window.innerHeight)

	//if (document.all){
	//	gettrailobjnostyle().innerHTML = 'A = ' + truebody().scrollHeight + '<br>B = ' + truebody().clientHeight;
	//} else {
	//	gettrailobjnostyle().innerHTML = 'C = ' + document.body.offsetHeight + '<br>D = ' + window.innerHeight;
	//}
	
	if (typeof e != "undefined"){
		if (docwidth - e.pageX < currentimagewidth + 45 ){
			// Move to the left side of the cursor (take into account div width)
			xcoord = e.pageX - xcoord - currentimagewidth - 15;
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 145)){
			ycoord += e.pageY - Math.max(0,(145 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){

		if (docwidth - event.clientX  < currentimagewidth + 45 ){
		 	// Move to the left side of the cursor (take into account div width)
			xcoord = event.clientX + truebody().scrollLeft - xcoord - currentimagewidth - 15;
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 145)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(145 + currentimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)

	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
	
	gettrailobj().visibility="visible";

}