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

var offsetfrommouse=[15,15]; //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 = 270;	// maximum image size.
var oWidth = 0;
var oHeight = 0;
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){

	document.onmousemove=followmouse;

	newHTML = '<div >';
	
	newHTML = newHTML + '<table  cellpadding="0" cellspacing="0" class="Formborder" >' ;
	newHTML = newHTML + '<tr > <td class="tdimagealign" valign="top"> ';
	newHTML = newHTML + '<div align="center" style="padding: 8px 2px 2px 2px;">';
	newHTML = newHTML + '<img src="' + imagename + '" border="0"></div>';
	newHTML = newHTML + ' </td></tr>';
	newHTML = newHTML + ' </table>';
	newHTML = newHTML + '</div>';
	var myImage = new Image();
	myImage.src = imagename;
	oWidth = myImage.width;	
	oHeight = myImage.height;
	oWidth = oWidth + 35;	
	currentimageheight = oHeight;
	//alert(oWidth + ',' + oHeight);
	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-offsetfrommouse[0];
	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(oWidth == 0 )
		oWidth = 380;
	//alert(currentimageheight);		
	if (typeof e != "undefined"){
		if (docwidth - e.pageX < oWidth){
			xcoord = e.pageX - xcoord - oWidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 110)){
			//ycoord += e.pageY - Math.max(0,(200 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
			ycoord += e.pageY - Math.max(0,(110 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}
	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < oWidth){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - oWidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 110)){
			//ycoord += event.clientY + truebody().scrollTop - Math.max(0,(200 + currentimageheight + event.clientY - docheight));
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(110 + currentimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth;
	var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
		if(ycoord < 0) { ycoord = ycoord*-1; }		
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}