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

var offsetfrommouse=[5,-5]; //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 currentimageheight = 380;	// maximum image size.

if (document.getElementById || document.all){
	document.write('<div id="trailimageid" style="position:absolute;visibility:visible;left:0px;top:0px;width:1px;height:1px">');
	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,wdth,hght){

	document.onmousemove=followmouse;
	
	w = wdth;
	h = hght;

	newHTML = '<div style="padding: 0px; border: 1px solid black; text-align: left; background: white; width: ' + wdth + 'px; height: ' + hght + 'px; background-image:url(' + imagename + '); background-repeat: no-repeat; background-position: center top; z-index: 999;">';
	//newHTML = newHTML + '<img src="' + imagename + '" border="0">';
	newHTML = newHTML + '<div style="padding: 18px; border: 0px none; text-align: left;">';
	newHTML = newHTML + '<b>' + title + '</b><br />';
	newHTML = newHTML + description + '<br />';
	newHTML = newHTML + '</div>';
	newHTML = newHTML + '</div>';
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
}

function hidetrail(){
	gettrailobj().innerHTML = " ";
	gettrailobj().display="none"
	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(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 < w){
			xcoord = e.pageX - xcoord - w - 50; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}

		//alert ('docheigt: ' + (docheight) + ' pageYOffset: ' + window.pageYOffset + ' pageY' + e.pageY);
		ycoord = docheight/2 - h/2 + window.pageYOffset;
		//alert ('koord' + ycoord);

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < w){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - w - 50; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		ycoord = docheight/2 - h/2 + document.documentElement.scrollTop;
	}

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

}