function BrowserCheck() {
  var b = navigator.appName;
  if (b=="Netscape") this.b = "ns";
  else if (b=="Microsoft Internet Explorer") this.b = "ie";
  else this.b = b;
  this.version = navigator.appVersion;
  this.v = parseInt(this.version);
  this.ns = (this.b=="ns" && this.v>=4);
  this.ns4 = (this.b=="ns" && this.v==4);
  this.ns6 = (this.b=="ns" && this.v==5);
  this.ie = (this.b=="ie" && this.v>=4);
  this.ie4 = (this.version.indexOf('MSIE 4')>0);
  this.ie5 = (this.version.indexOf('MSIE 5')>0);
  this.ie7 = (this.version.indexOf('MSIE 7')>0);
  this.min = (this.ns||this.ie);
  if(this.ns6){
  	document.all = document.getElementsByTagName("*");
  	this.ns=false;
  	this.ns4=false;
  	this.ns5=true;
  	this.ie=true;
	this.ie4=true;
	this.ie5=true;
	this.ie7=true;
  }
}
is = new BrowserCheck();
//
function getBrowseHeight(){
 if (window.innerHeight) return window.innerHeight  ;
 else if (document.body && document.body.offsetHeight) return document.body.offsetHeight;
 else return 0;
}
// ------------------------------------------
// Mover capas
// ------------------------------------------
function MoverA(capa, x, y){
  if(is.ie){
    EstaCapa = document.getElementById(capa).style;
  }else{
    EstaCapa = eval("document." + capa);
  }
  if(x!=null){EstaCapa.left = x};
  if(y!=null){EstaCapa.top = y};
}