function abrir()
{
  navegador = navigator.appName
	version = parseInt(navigator.appVersion)
	altura_t = screen.availHeight
	anchura_t = screen.availWidth
	altura_w = screen.height
	anchura_w = screen.width
	
	if (anchura_w < 1000) {
		//abre_popup();
		window.location = 'index800.htm';
		//alert ("si")
	} else {
		//alert ("no")
		window.location = 'index1024.htm';
	}
}

function abre_popup()	{		
	window.open('index800.htm','foto','resizable=0,toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=0,height=572,width=790,top=0,left=0,fullscreen=0');
	//window.open('index800.htm','foto','menubar=1,toolbar=1,fullscreen=1,location=1,directories=1,status=1');
}