/*
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 = 150; // maximum image size.

if (document.getElementById || document.all){
	document.write('<div id="trailimageid">');
	document.write('</div>');
}

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

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


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

function showtrail(imagename, title, description, showthumb, height, width){

	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove = followmouse;

	//newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888; width: '+width+'px;">';
	newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888;">';
	newHTML = newHTML + '<span class="largetitle">' + title + '</span><div class="borderbot"></div>';
	//newHTML = newHTML + description + '<br/>';
	if (showthumb > 0){
		newHTML = newHTML + '<div align="center" style="padding: 5px 2px 8px 2px; margin-bottom: 5px;"><img src="' + imagename + '" border="0" /><p class="largetitle">Pulse para ampliar más</p></div>';
	}
	newHTML = newHTML + '</div>';
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().visibility="visible";
}


function hidetrail(){
	gettrailobj().visibility="hidden"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

function followmouse(e){

/* width: 280 en visor.css
	var c1 = 290;
	var c2 = 280;
//*/
///* width: 180 en visor.css
	var c1 = 180;
	var c2 = 180;
//*/
	var c3 = 110;
	var c4 = 15;

	var xcoord = offsetfrommouse[0]
	var ycoord = offsetfrommouse[1]
	var docwidth = document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - c4;
	var docheight = document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(document.body.offsetHeight, window.innerHeight);

	//if (document.all){
	//	gettrailobjnostyle().innerHTML = 'A = ' + truebody().scrollHeight + '<br>B = ' + truebody().clientHeight;
	//} else {
	//	gettrailobjnostyle().innerHTML = 'C = ' + document.body.offsetHeight + '<br>D = ' + window.innerHeight;
	//}
	if(typeof e != "undefined"){
		if(docwidth - e.pageX < c1){
			xcoord = e.pageX - xcoord - c2; // Move to the left side of the cursor
		}
		else{
			xcoord += e.pageX;
		}
		// alert(docheight+"-"+e.pageY);
		if(docheight - e.pageY < (currentimageheight + c3)){
			ycoord += e.pageY - Math.max(0, (c3 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		}
		else{
			ycoord += e.pageY;
		}
	}
	else if(typeof window.event != "undefined"){
		if (docwidth - event.clientX < c1){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - c2; // Move to the left side of the cursor
		}
		else{
			xcoord += truebody().scrollLeft+event.clientX
		}
		if(docheight - event.clientY < (currentimageheight + c3)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0, (c3 + currentimageheight + event.clientY - docheight));
		}
		else{
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	var docwidth = document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - c4;
	var docheight = document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight);
	// alert(ycoord);
	gettrailobj().left = xcoord + "px";
	gettrailobj().top = ycoord + "px";

}