function decodem(txt){
	var orig="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_-.@";
	var dest="bcqNdghT1YUV2Xi9jaQklm0LpJDr@stKuv6734wx_yzABCE.FGHMnIOPRSefWZ58-o";
	var out="";
	if(txt!=""){
		for(i=0;i<txt.length;i++){
			ind=orig.indexOf(txt.substring(i,i+1));
			if(ind!=-1) out+=dest.substring(ind,ind+1);
			else out+=txt.substring(i,i+1);
		}
	}
	return out;
}

function emailto(witch){
	document.location.href="mailto:"+decodem(witch);
}

function openwin(url,w,h){
	l=(screen.width-w)/2;
	t=(screen.height-h)/2;
	feat="width="+w+",height="+h+",top="+t+",left="+l+",status=no,scrollbars=yes,menubar=no,resizable=yes";
	w1=window.open(url,'',feat);
}

function aviso(){
	openwin("aviso.php",300,400);
}

function checkf(){
	if(document.forms[0].seed.value!=""){
		return true;
	}
	else{
		alert("Debe introducir el número de activación.");
		return false;
	}
}