/*
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 = 40;    // maximum image size.
var defaultimagewidth = 40;     // 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(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : 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...</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.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
                        xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
                } else {
                        xcoord += e.pageX;
                }
                if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
                        ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
                } else {
                        ycoord += e.pageY;
                }

        } 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"

}