/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[10,0]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.
var imageheight = 270;	// maximum image size.

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

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


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

function hidetrail(){
	gettrailobj().visibility="hidden"
	document.onmousemove=""
	gettrailobj().style.left="-700px" //move off screen so when mouseover again initial position is far left and not seen
}

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(window.innerHeight)

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < 380){
			xcoord = e.pageX - xcoord - 400; // Move to the left side of the cursor
		} else {
			xcoord = xcoord + e.pageX;
		}
		if (docheight - e.pageY < (imageheight + 40)){
			ycoord = ycoord + e.pageY - Math.max(0,(40 + imageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord = ycoord + e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 380){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; // Move to the left side of the cursor
		} else {
			xcoord = xcoord + truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (imageheight + 40)){
			ycoord = ycoord + event.clientY + truebody().scrollTop - Math.max(0,(40 + imageheight + event.clientY - docheight));
		} else {
			ycoord = ycoord + truebody().scrollTop + event.clientY;
		}
	}

	if(ycoord < 0) { ycoord = ycoord*-1; }
	gettrailobj().style.left=xcoord+"px"
	gettrailobj().style.top=ycoord+"px"

}

function displaytrail(imagename,caption,height){
	imageheight = height;

	document.onmousemove=followmouse;

	sHTML = '<div style="padding: 3px; background-color: #ffffff; border: 1px solid #999999;">';
	sHTML = sHTML + '<div align="center" style="padding: 2px 2px 2px 2px;">';
	sHTML = sHTML + '<img src="' + imagename + '" style="border: solid 1px #666666"></div>';
	sHTML = sHTML + '<small>' + caption + '</small></div>';

	gettrailobj().innerHTML = sHTML;
	gettrailobj().style.display="inline";
}