switch (pctxt_format){
	case "120x240":pctxt_width=120;pctxt_height = 240;break;
	case "120x600":pctxt_width=120;pctxt_height = 600;break;
	case "160x600":pctxt_width=160;pctxt_height = 600;break;
	case "180x150":pctxt_width=180;pctxt_height = 150;break;
	case "200x200":pctxt_width=200;pctxt_height = 200;break;
	case "250x250":pctxt_width=250;pctxt_height = 250;break;
	case "200x404":pctxt_width=200;pctxt_height = 404;break;
	case "300x250":pctxt_width=300;pctxt_height = 250;break;
	case "336x280":pctxt_width=336;pctxt_height = 280;break;
	case "395x60":pctxt_width=395;pctxt_height = 60;break;
	case "468x60":pctxt_width=468;pctxt_height = 60;break;
	case "728x90":pctxt_width=728;pctxt_height = 90;break;
}

var rnd = (new String(Math.random())).substring(2,8) + (((new Date()).getTime()) & 262143);
if(pctxt_style==""){pctxt_style = "9";}
if (!pn_pos){var pn_pos=1;}else{pn_pos=pn_pos+1;}

if(pctxt_style==""){
	pctxt_style = "9";
}
if (pctxt_style=="p"){
	var pctxt_url = "";
	if (pctxt_tit!=""){pctxt_url = pctxt_url + "&tit=" + pctxt_tit;}
	if (pctxt_enl!=""){pctxt_url = pctxt_url + "&enl=" + pctxt_enl;}
	if (pctxt_txt!=""){pctxt_url = pctxt_url + "&txt=" + pctxt_txt;}
	if (pctxt_txt_f!=""){pctxt_url = pctxt_url + "&txtf=" + pctxt_txt_f;}
	if (pctxt_bor!=""){
		if ((pctxt_bor=="FFFFFF")||(pctxt_bor=="ffffff")||(pctxt_bor=="#FFFFFF")||(pctxt_bor=="#ffffff")){
			pctxt_url = pctxt_url + "&bor=D2D2D2";
		}else{
			pctxt_url = pctxt_url + "&bor=" + pctxt_bor;
		}
	}
	document.write("<iframe src=\"http://cma.publicidadcontextual.com/ad/?pn_pos="+pn_pos+"&rnd="+rnd+"&f="+pctxt_format+"&a="+pctxt_affid+"&s="+pctxt_style+"&n="+pctxt_newwindow+pctxt_url+"\" width=\""+pctxt_width+"\" height=\""+pctxt_height+"\" frameborder=\"0\" scrolling=\"no\"></iframe>");
}else{
	document.write("<iframe src=\"http://cma.publicidadcontextual.com/ad/?pn_pos="+pn_pos+"&rnd="+rnd+"&f="+pctxt_format+"&a="+pctxt_affid+"&s="+pctxt_style+"&n="+pctxt_newwindow+"\" width=\""+pctxt_width+"\" height=\""+pctxt_height+"\" frameborder=\"0\" scrolling=\"no\"></iframe>");
}