// JavaScript Document
    
function showCaptchaDesc(){
	
	element = document.getElementById('whyCaptcha');   // Element dessen Abstand gemessen wird
	abstLeft = 0;   // init
	abstTop  = 0;
	while(element.offsetParent){    // if element hat Parrent
    	abstLeft  += element.offsetLeft;
	    abstTop   += element.offsetTop;
	    element = element.offsetParent;   // rekursiv zurück
  	}
	desc = document.getElementById('whyCaptchaDesc');
	X = 300;
	Y = 266;

	newposX = abstLeft - X;
	newposY = abstTop-Y-10;
	

	desc.style.left =  newposX +'px';
	desc.style.top =  newposY +'px';
	desc.style.visibility = "visible";	
}

function hideCaptchaDesc(){
	document.getElementById('whyCaptchaDesc').style.visibility = "hidden";
}