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

var offsetfrommouse=[15,25]; //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 defaultimageheight = 584;	// maximum image size.
var defaultimagewidth = 467;	// maximum image size.

var timer;

function gettrailobj()
{
	if (document.getElementById)
	{
		return document.getElementById("preview_div").style;
	}
}

function gettrailobjnostyle()
{
	if (document.getElementById)
	{
		return document.getElementById("preview_div");
	}
}


function truebody()
{
	if (!window.opera && 
	     document.compatMode && 
	     document.compatMode!="BackCompat")
	{
		return document.documentElement;
	}
	else
	{
		return document.body;
	}
}


function hidetrail()
{
  gettrailobj().display= "none";
  document.onmousemove="";
  gettrailobj().left="-500px";
  clearTimeout(timer);
}

function showtrail(imagename,title,width,height)
{
  i = imagename;
  t = title;
  w = width;
  h = height;
  timer = setTimeout("show('"+i+"',t,w,h);",200);
}

function show(imagename,title,width,height)
{

    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( (navigator.userAgent.indexOf("Konqueror") == -1  || 
	     navigator.userAgent.indexOf("Firefox") != -1 || 
	     (navigator.userAgent.indexOf("Opera") == -1 && 
	      navigator.appVersion.indexOf("MSIE") != -1)) && 
	      (docwidth>650 && docheight>500)) 
	{
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';

		width += 30;
		height += 55;
		defaultimageheight = height;
		defaultimagewidth = width;

		document.onmousemove=followmouse;

		newHTML = '<div class="border_preview" style="width:'+  width +'px;height:'+ height +'px"><div id="loader_container"><div id="loader"><div align="center">Loading full size image...</div><div id="loader_bg"><div id="progress"> </div></div></div></div>';
		newHTML = newHTML + '<h2 class="title_h2">' + ' '+title + '</h2>';

		newHTML = newHTML + '<div class="preview_temp_load"><img onload="javascript:remove_loading();" src="' + imagename + '" border="0"></div>';
		newHTML = newHTML + '</div>';

		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 )
		{
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

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.clientX < defaultimagewidth + 2*offsetfrommouse[0])
    {
      xcoord = e.clientX - xcoord - defaultimagewidth; // Move to the left side of the cursor
    } 
    else 
    {
      xcoord += e.clientX;
    }
    if (docheight - e.clientY < defaultimageheight + 2*offsetfrommouse[1])
    {
      ycoord += e.clientY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.clientY - docheight - truebody().scrollTop));
    } 
    else 
    {
      ycoord += e.clientY;
    }

  } 
  else if (typeof window.event != "undefined")
  {
    if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0])
    {
      xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
    } 
    else 
    {
      xcoord += truebody().scrollLeft+event.clientX;
    }
    if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1]))
    {
      ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
    } 
    else 
    {
      ycoord += truebody().scrollTop + event.clientY;
    }
  }
  gettrailobj().left=xcoord+"px";
  gettrailobj().top=ycoord+"px";

}

//Blink function, recursivly called after load
function blinkIt() 
{
	if (!document.all)
	{
		return;
	}
	else 
	{
		var s = document.all.tags('blink')[0];
		s.style.visibility = (s.style.visibility=='visible') ? 'hidden' : 'visible';
	}
}