/*
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:1000;" 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) {
	if (height > 0){
		currentimageheight = height;
	}

	//document.onmousemove=followmouse;
  	document.onmousemove=positionMouseover;

	var newHTML = '<div class="thumbhover">';

	newHTML += '<img src="' + imagename + '"';
	if (height > 0 && width > 0 ){
		newHTML += ' height="' + height + '" width="' + width + '"';
	}
	newHTML += ' border="0"/>';


        newHTML += '<h1>' + unescape(title) + '</h1>';
//	if (width > 0) {
//	  newHTML += '<p>' + unescape(description).replace(/\[[^\]]*\]/g, '') + '</p>';
//	} else {
//	  newHTML += '<p>'  + unescape(description).replace(/\[[^\]]*\]/g, '') + '</p>';
//	}

	newHTML += '</div>';
	newHTML += '<div class="thumbhover-shadow"></div>';
	gettrailobjnostyle().innerHTML = newHTML;

  var style = gettrailobj();

  style.position = "absolute";
  style.display = "inline";
}

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

  var newHTML = '<div style="width:388px;height:300px;padding: 5px; background-color: #FFF; border: 1px solid #888; ">';
  newHTML += '<object width="388px" height="300px" 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="300px">';
  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 + 110)){
			// 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,(110 + 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 + 110)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(110 + currentimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

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

}

/*
 * Gets the element under the mouse and positions the trail image relative 
 * to it, either to the left or to the right, without overlapping it
 */
function positionMouseover(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)

  var trailObjWidth = $(gettrailobjnostyle()).width();
  var trailObjHeight = $(gettrailobjnostyle()).height();

  var scrollTop;
  
  if (typeof e != "undefined"){
    var target;
    if (typeof e.originalTarget != "undefined") {
      target = $(e.originalTarget);
    } else {
      target = $(e.srcElement);
    }

    var pos = target.offset();
    // xcoord
    if (docwidth - pos.left - target.width() < pos.left) {// if there is less room to the right of the image
    //if (docwidth - pos.left < 450){
      xcoord = pos.left - xcoord - trailObjWidth; // Move to the left of the image
    } else {
      xcoord += pos.left + target.width();
    }
    // ycoord
    if (docheight - pos.top < (trailObjHeight + 15)) { // If not enough room below pos.top
      // 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 += pos.top - Math.max(0,(15 + trailObjHeight + pos.top - docheight - scrollTop));
    } else {
      ycoord += pos.top;
    }

  } else if (typeof window.event != "undefined"){
    var pos = $(window.event.srcElement).offset();
    // xcoord
    if (docwidth - pos.left - event.srcElement.width < pos.left) {// If there is less room to the right of the image
    //if (docwidth - pos.left < 450){
      xcoord = pos.left + truebody().scrollLeft - xcoord - trailObjWidth; // Move to the left side of the cursor
    } else {
      xcoord += truebody().scrollLeft + pos.left + event.srcElement.width;
    }
    // ycoord
    scrollTop = truebody().scrollTop;
    if (docheight - pos.top < (trailObjHeight + 15)){ // If not enough room below pos.top
      ycoord += pos.top - Math.max(0,(15 + trailObjHeight + pos.top - docheight));
    } else {
      ycoord += pos.top;
    }
  }

  if(ycoord < scrollTop) {
    ycoord = scrollTop + 1;
  }
  gettrailobj().left=xcoord+"px"
  gettrailobj().top=ycoord+"px"
  
  document.onmousemove=""

}