function foo(){
		
	var v = document.getElementsByTagName('p');
	var mIzquierdos = new Array( "0", "50", "25", "0", "40", "120", "20", "65", 
"50", 
"20");
	for( i=0; i < v.length; i++){

		//a = Math.round( Math.random() * 200)
		v[i].style.marginLeft = mIzquierdos[i] + "px";
		
	}
	
//document.getElementById('po').style.color = 'red';

}
function establecer_fondo(){  
	
	var ancho = window.screen.width;
	var alto = window.screen.height;

//	if( ancho == 640  && alto == 480 )
//	document.getElementById('bbody').style.background = "green url( <?=base_url()?>/publica/imagenes/tema/fondo_640_480.jpg ) no-repeat";
	if( ancho == 800  && alto == 600 )
	document.getElementById('bbody').style.background = "green url( ../../publica/imagenes/tema/fondo_800_600.jpg ) no-repeat";
	if( ancho == 1024 && alto == 768 )
	document.getElementById('bbody').style.background = "green url( ../../publica/imagenes/tema/fondo_1024_768.jpg ) no-repeat";
	if( ancho == 1256 && alto == 1024 )
	document.getElementById('bbody').style.background = "green url( ../../publica/imagenes/tema/fondo_1256_1024.jpg ) no-repeat";
	if( ancho == 1280 && alto == 960 )
	document.getElementById('bbody').style.background = "green url( ../../publica/imagenes/tema/fondo_1280_960.jpg ) no-repeat";


	
}
function en_scroll(){ 

	// La direccion siempre abajo
	document.getElementById('datos_cole').style.top = document.body.offsetHeight + "px";
	

}