// JavaScript Document
var path="img";

function cambio_back(img){
	fondo=document.getElementById("IM");
	temp=img.split("/");
	img=temp[1];
	fondo.style.backgroundImage="url("+path+"/"+img+")";
}

if(screen.width == 1024 && screen.height == 768){
//alert('1024 x 768');
	path="img1024";
}
else if(screen.width == 800 && screen.height == 600){
//alert('800 x 600');
	path="img800";
}
else {//if(screen.width == 1208 && screen.height == 1024){
//alert('1280 x 1024');
	path="img";
}

//cambio_back("img/home.jpg");

var version=0;
var navegador = navigator.appName;
var verelbotc = false;

if (navegador == "Microsoft Internet Explorer"){
	if (navigator.appVersion.indexOf("MSIE")!=-1){
		temp=navigator.appVersion.split("MSIE");
		version=parseFloat(temp[1]);
	}
	
	if (version<7.0)
		verelbotc = true;
		
}

<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->
function abrir(){
	window.open("home.html", "", "statusbar= no, resizable=yes, toolbars= no, scrollbars=no, fullscreen=yes, widht="+screen.width+", height="+screen.height);
}

function plugin(){
	window.location.href="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash";
}

function verbotcerar(){
	cambio_back("img/home.jpg");
	
	if(verelbotc==true){
		ojnh=document.getElementById("BotCerrar");
		ojnh.style.display="block";
		
	}
}