if(navigator.appVersion.substring(0,1)>=3)
	{
	bot0		=new Image();
	bot0.src	="images/envioa.gif";
	bot0p		=new Image();
	bot0p.src	="images/enviop.gif";
	bot1		=new Image();
	bot1.src	="images/borrara.gif";
	bot1p		=new Image();
	bot1p.src	="images/borrarx.gif";
	bot2		=new Image();
	bot2.src	="images/bt_1a.gif";
	bot2p		=new Image();
	bot2p.src	="images/bt_1p.gif";
	bot3		=new Image();
	bot3.src	="images/bt_2a.gif";
	bot3p		=new Image();
	bot3p.src	="images/bt_2p.gif";
	bot4		=new Image();
	bot4.src	="images/bt_3a.gif";
	bot4p		=new Image();
	bot4p.src	="images/bt_3p.gif";
	}
function CambiaImg(imgid,imgnew)
	{
	if(navigator.appVersion.substring(0,1)>=3)
		{
		document.images[imgid].src=eval(imgnew+".src");
		}
	}