/*
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 = 388;	// maximum image size.

if (document.getElementById || document.all){
	document.write('<div style="position:relative;z-index:100;" id="trailimageid">');
	document.write('</div>');
}

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

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

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

function showtrail(imagename, title, description, descriptionId, height, width) {
	//alert(docwidth + " " + docheight);
	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove=followmouse;

	var newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888;">';
	newHTML += '<h2>' + unescape(title) + '</h2>';
//	newHTML += unescape(description).replace(/\[[^\]]*\]/g, '') + '<br/>';

  newHTML += '<div align="center" style="padding: 8px 2px 2px 2px;">';
	newHTML += '<img src="' + imagename + '"';
	if (height > 0 && width > 0 ){
		newHTML += ' height="' + height + '" width="' + width + '"';
	}
	newHTML += ' border="0"/></div>';

	newHTML += '</div>';
	gettrailobjnostyle().innerHTML = newHTML;
  
  var style = gettrailobj();
  
  style.position = "absolute";
  style.display = "inline";
}

function showMovie(video, title) {
  document.onmousemove=followmouse;

  var newHTML = '<div style="width:388px;height:258px;padding: 5px; background-color: #FFF; border: 1px solid #888; ">';
  newHTML += '<object width="388px" height="258px" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0">';
  newHTML += '<param name="movie" value="/flash/video_loop.swf">';
  newHTML += '<param name="quality" value="best">';
  newHTML += '<param name="loop" value="true">';
  newHTML += '<param name="FlashVars" value="videoLocation=' + video + '&bufferPercent=25">';
  newHTML += '<EMBED SRC="/flash/video_loop.swf" LOOP="true" QUALITY="best" FlashVars="videoLocation=' + video + '&bufferPercent=25" WIDTH="388px" HEIGHT="258px">';
  newHTML += '</object>';
  newHTML += "</div>";    
  gettrailobjnostyle().innerHTML = newHTML;
  
  var style = gettrailobj();
  
  style.position = "absolute";
  style.display = "inline";
}

function hidetrail() {
	gettrailobjnostyle().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 (typeof e != "undefined"){
		if (docwidth - e.pageX < 450){
			xcoord = e.pageX - xcoord - 400; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 200)){
			// truebody().scrollTop is always zero in Safari 3.1, so we us documnet.body.scrollTop instead
			if ( document.body ){
				scrollTop = Math.max(truebody().scrollTop, document.body.scrollTop);
			} else {
				scrollTop = truebody().scrollTop;
			}
			ycoord += e.pageY - Math.max(0,(200 + currentimageheight + e.pageY - docheight - scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 450){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 50)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(50 + currentimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

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

}