/* Popup window */
function AbrirPopUp(URL,ancho,alto,izq,sup){
var Sx=((screen.availWidth-ancho)/2)-5;
var Sy=((screen.availHeight-alto)/2)-15;
window.open(URL,'new','width='+ancho+'px,height='+alto+'px,top='+Sy+'px,left='+Sx+'px,directories=0,scrollbars=1,status=0,location=0,menubar=0,toolbar=0,resizable=0');
}

/* Preload images */
var myimages=new Array();
function preloadImages(){
for(i=0;i<preloadImages.arguments.length;i++){
myimages[i]=new Image();
myimages[i].src=preloadImages.arguments[i];
}
}

/* Change class */
function fill(obj,estilo){
obj.className=estilo;
}