function send_pixel(el, cvid, cval, clab) {
/**
 *  onclick="send_pixel(this, 1056054295, 0.07, 'lvhvCMnkqAEQl7jI9wM');"
 */
 
	// defaults
	cvid = cvid ? cvid : 1056054295;
	cval = cval ? cval : 0.07;
	clab = clab ? clab : 'lvhvCMnkqAEQl7jI9wM';
	
	// build and insert
	var cvurl = 
'/conversion/'+cvid+'/?value='+cval+'&label='+clab+'&guid=ON&script=0';
	var pix = document.createElement('img');
	pix.setAttribute('src', 
'http://www.googleadservices.com/pagead'+cvurl); 
pix.setAttribute('class', 'pixel');
	pix.setAttribute('width', 1); pix.setAttribute('height', 1); 
pix.setAttribute('border', 0);
	el.parentNode.insertBefore(pix, el);
}