/* 
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

var t_id = setInterval(animate,20);
var pos=0;
var dir=2;
var len=0;

function animate() {
    var elem = document.getElementById('progress');
    if(elem != null) {
        if (pos==0) len += dir;
        if (len>32 || pos>79) pos += dir;
        if (pos>79) len -= dir;
        if (pos>79 && len==0) pos=0;
        elem.style.left = pos;
        elem.style.width = len;
    }
}

function remove_loading() {
    this.clearInterval(t_id);
    var targelem = document.getElementById('loader_container');
    targelem.style.display='none';
    targelem.style.visibility='hidden';
    var t_id = setInterval(animate,60);
}


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+=10
        height+=15
        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 preview...</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"
}