function move_box(an, box)
{
    var cleft = 0;
    var ctop = 0;
    var obj = an
	
	
    while (obj.offsetParent)
    {
        cleft += obj.offsetLeft;
        ctop += obj.offsetTop;
        obj = obj.offsetParent;
    }
	//alert(cleft);
    box.style.left = (cleft-250) + 'px';

    ctop += an.offsetHeight + 8;

    // Handle Internet Explorer body margins,
    // which affect normal document, but not
    // absolute-positioned stuff.
    if (document.body.currentStyle && document.body.currentStyle['marginTop'])
    {
        ctop += parseInt(document.body.currentStyle['marginTop']);
    }

    box.style.top = 20 + 'px';
}

// Shows a box if it wasn't shown yet or is hidden
// or hides it if it is currently shown
function show_hide_box(an, width, height, borderStyle, divId)
{
    if(divId == "floatingdivSignUp")
		document.getElementById('floatingdivLogin').style.display ="none";
	else if(divId == "floatingdivLogin")
		document.getElementById('floatingdivSignUp').style.display ="none";
	
	var boxdiv = document.getElementById(divId);
    boxdiv.style.position = 'absolute';
    boxdiv.style.width = width + 'px';
    boxdiv.style.height = height + 'px';

	
    if (boxdiv != null)
    {
        if (boxdiv.style.display=='none')
        {
            // Show existing box, move it
            // if document changed layout
            move_box(an, boxdiv);
            boxdiv.style.display='block';
            bringToFront(boxdiv);
        }
        else
            // Hide currently shown box.
            boxdiv.style.display='none';
        return false;
    }


    var offset = 0;

	var contents = document.getElementById('contentsSignUp');

    move_box(an, boxdiv);

    return false;
}

function getAbsoluteDivs()
{
    var arr = new Array();
    var all_divs = document.body.getElementsByTagName("DIV");
    var j = 0;

    for (i = 0; i < all_divs.length; i++)
        if (all_divs.item(i).style.position=='absolute')
        {
            arr[j] = all_divs.item(i);
            j++;
        }

    return arr;
}

function bringToFront(obj)
{
    if (!document.getElementsByTagName)
        return;

    var divs = getAbsoluteDivs();
    var max_index = 0;
    var cur_index;

	for (i = 0; i < divs.length; i++)
    {
        var item = divs[i];
        if (item == obj ||
            item.style.zIndex == '')
            continue;

        cur_index = parseInt(item.style.zIndex);
        if (max_index < cur_index)
        {
            max_index = cur_index;
        }
    }

    obj.style.zIndex = max_index + 1;
}