Strange behaviour while positioning elements

[MrFies]

Hi, I create a div and a button during runtime and try to center them.

darken.appendChild(message);darken.appendChild(errbtn);document.body.appendChild(darken);hcenter(message);hcenter(errbtn);

darken is another div, in which i put the massage und the button. Its all about error-handling.With hcenter I try to center both elements.

function hcenter(element){	var parent = element.parentNode;	var pWidth = getwidth(parent);	var eWidth = getwidth(element);	var x = (Math.round(pWidth/2))-(Math.round(eWidth/2));	element.style.left = x+'px';}

With the first element it works without problem, but not for the button. I already had a look, if the button has no style.left but it seems to have. I alerted x and got the correct value for both elements.Has someone an idea?

[MrFies]

I found it myself. But my own post helped me out ;)I forgot the 'position: absolute;' in styles.css for the 'errbtn'