/*
 * Url preview script 
 * powered by jQuery (http://www.jquery.com)
 * 
 * written by Alen Grakalic (http://cssglobe.com)
 * 
 * for more info visit http://cssglobe.com/post/1695/easiest-tooltip-and-image-preview-using-jquery
 *
 */
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 = 300;   // maximum image size.


 
this.screenshotPreview = function(){    
    /* CONFIG */
        
        xOffset = 40;
        yOffset = 30;
        
        // these 2 variable determine popup's distance from the cursor
        // you might want to adjust to get the right result
        
    /* END CONFIG */
    jQuery("a.preview").hover(function(e){
        this.t = this.title;
        this.title = "";    
        var c = (this.t != "") ? "<br/>" + this.t : "";
        jQuery("body").append("<div id='preview'><img src='"+ this.rel +"' alt='Loading' />"+ c +"</div>");                              
        jQuery("#preview")
            .css("top",(e.pageY - xOffset) + "px")
            .css("left",(e.pageX + yOffset) + "px")
            .fadeIn("slow");                        
    },
    function(){
        this.title = this.t;    
        jQuery("#preview").remove();
    }); 
    
    /*jQuery("a.preview").mousemove(function(e){
        jQuery("#preview")
            .css("top",(e.pageY - xOffset) + "px")
            .css("left",(e.pageX + yOffset) + "px");
    }); 
    */      
    jQuery("a.preview").mousemove(function(e){
        followmouse(e);
    });
};

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 < 330){
            xcoord = e.pageX - xcoord - 350; // Move to the left side of the cursor
        } else {
            xcoord += e.pageX;
        }
        if (docheight - e.pageY < (currentimageheight + 110)){
            ycoord += e.pageY - Math.max(0,(110 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
        } else {
            ycoord += e.pageY;
        }

    } else if (typeof window.event != "undefined"){
        if (docwidth - event.clientX < 330){
            xcoord = event.clientX + truebody().scrollLeft - xcoord - 350; // 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;
        }
    }

    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
    var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
        if(ycoord < 0) { ycoord = ycoord*-1; }
    //gettrailobj().left=xcoord+"px"
    //gettrailobj().top=ycoord+"px"
    //console.log("xcoord: " + xcoord + " ycoord: "+ ycoord);
    jQuery("#preview").css("top",ycoord + "px").css("left",xcoord + "px");

}

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




function followmouse1(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 < 330){
            xcoord = e.pageX - xcoord - 350; // Move to the left side of the cursor
        } else {
            xcoord += e.pageX;
        }
        if (docheight - e.pageY < (currentimageheight + 110)){
            ycoord += e.pageY - Math.max(0,(110 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
        } else {
            ycoord += e.pageY;
        }

    } else if (typeof window.event != "undefined"){
        if (docwidth - event.clientX < 330){
            xcoord = event.clientX + truebody().scrollLeft - xcoord - 350; // 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;
        }
    }

    var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
    var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
        if(ycoord < 0) { ycoord = ycoord*-1; }
    jQuery("fs-popup").css("top",ycoord + "px").css("left",xcoord + "px");

}

// starting the script on page load
jQuery(document).ready(function(){
    screenshotPreview();
});