/***********************************************
* Image Thumbnail viewer- © Dynamic Drive (www.dynamicdrive.com)
*/
var ie=document.all
var ns6=document.getElementById&&!document.all
var alto=6 //altura de aparicion de la imagen
var lado=340 //lateral de aparicion de la imagen

function ietruebody(){
return (document.compatMode!="BackCompat")? document.documentElement : document.body
}

function enlarge(which, e, position, imgwidth, descr){
if (ie||ns6){
crossobj=document.getElementById? document.getElementById("showimage") : document.all.showimage
if (position=="center"){
pgyoffset=ns6? parseInt(pageYOffset) : parseInt(ietruebody().scrollTop)
horzpos=ns6? pageXOffset+window.innerWidth/2-imgwidth/2 : ietruebody().scrollLeft+ietruebody().clientWidth/2-imgwidth/2
vertpos=ns6? pgyoffset+window.innerHeight/2-imgheight/2 : pgyoffset+ietruebody().clientHeight/2-imgheight/2
if (window.opera && window.innerHeight) //compensate for Opera toolbar
vertpos=pgyoffset+window.innerHeight/2-imgheight/2
vertpos=Math.max(pgyoffset, vertpos)
}
else{
var horzpos=ns6? pageXOffset+e.clientX : ietruebody().scrollLeft+lado
var vertpos=ns6? pageYOffset+e.clientY : ietruebody().scrollTop+alto
}
crossobj.style.left="10px"
crossobj.style.top=vertpos+"px"
//crossobj.innerHTML='<div align="right" id="dragbar">'+descr+'      <span  onClick="closepreview()"><img src="cerrar.gif" border="0" width="18" height="18"  hspace="1" vspace="0"></span> </div><img src="'+which+'">'
crossobj.innerHTML='<table border=0 cellpadding=0 cellspacing=0><tr><td id="dragbar">'+descr+'</td><td align=right bgcolor=#ff0000 background="separador_h.gif"><img src="cerrar.gif" border="0" width="17" height="17"  hspace="0" vspace="0" alt="cerrar"onClick="closepreview()"></td></tr><tr><td colspan=3><img src="'+which+'"></td></tr></table>'
crossobj.style.visibility="visible"
return false
}
else //if NOT IE 4+ or NS 6+, simply display image in full browser window
return true
}

function closepreview(){
crossobj.style.visibility="hidden"
}

function drag_drop(e){
if (ie&&dragapproved){
crossobj.style.left=tempx+event.clientX-offsetx+"px"
crossobj.style.top=tempy+event.clientY-offsety+"px"
}
else if (ns6&&dragapproved){
crossobj.style.left=tempx+e.clientX-offsetx+"px"
crossobj.style.top=tempy+e.clientY-offsety+"px"
}
return false
}

function initializedrag(e){
if (ie&&event.srcElement.id=="dragbar"||ns6&&e.target.id=="dragbar"){
offsetx=ie? event.clientX : e.clientX
offsety=ie? event.clientY : e.clientY

tempx=parseInt(crossobj.style.left)
tempy=parseInt(crossobj.style.top)

dragapproved=true
document.onmousemove=drag_drop
}
}

document.onmousedown=initializedrag
document.onmouseup=new Function("dragapproved=false")