function pd_swapImg(labeln,imagen)
	{document.getElementById(labeln).src = imagen}

function preloadImgs()
	{var d=document,a=arguments;
	if(!d.FP_imgs) d.FP_imgs=new Array();
	for (var i=0; i<a.length; i++)
		{ d.FP_imgs[i]=new Image; d.FP_imgs[i].src=a[i]; }
	}