How to get the height of a DIV considering inner element's margins?

Answer 1

ok also not pretty but this is how I do it (disclaimer: I stole this from somewhere once)

var height = elem.clientHeight + getBufferHeight(elem, true);

function getBufferHeight(elem, includeMargins) {
    if (!elem.visible()) {
        return 0;
    }
    //do new Number instead of parseFloat to avoid rounding errors 
    var result = 0;
    if (includeMargins) {
        result =   
            new Number(elem.getStyle('marginTop').replace(/[^\d\.]/g, '')).ceil() +  
            new Number(elem.getStyle('marginBottom').replace(/[^\d\.]/g, '')).ceil();
    }     
    result +=
        new Number(elem.getStyle('borderBottomWidth').replace(/[^\d\.]/g, '')).ceil() +
        new Number(elem.getStyle('borderTopWidth').replace(/[^\d\.]/g, '')).ceil() +    
        new Number(elem.getStyle('paddingTop').replace(/[^\d\.]/g, '')).ceil() +
        new Number(elem.getStyle('paddingBottom').replace(/[^\d\.]/g, '')).ceil();                        
    return result;
}