var elem;
var intmaxwidth;
var intwidthvalue;

function showHideContent(id, show, left, top)
{
    elem = document.getElementById(id);
    
    if (elem) 
    {
        if (show) 
        {
            elem.style.display = 'block';
            elem.style.visibility = 'visible';
            intwidthvalue = parseInt(elem.style.width);
            left = (screen.width/2) - intwidthvalue;
            elem.style.left = left;
            elem.style.top = top;
        }
        else
        {
            elem.style.display = 'none';
            elem.style.visibility = 'hidden';
            elem.style.left = left;        
            elem.style.top = top;
        }
    }
}