function toggleVisibility(objectId, spanModeTextId)
{
    obj = document.getElementById(objectId);
	spanMode = document.getElementById(spanModeTextId);
	
    if (obj != undefined && obj != null && spanMode != undefined && spanMode != null)
    {
        if (obj.style.display == "none" || obj.style.display == null || obj.style.display == "")
		{	
            obj.style.display = "block";
            spanMode.innerText = "скрыть";
        }
        else 
        {
            obj.style.display = "none";
            spanMode.innerText = "открыть";
        }
    }
}

function showPopup(url, width, height)
{
	var xpos = (screen.availWidth - width) / 2;
	var ypos = (screen.availHeight - height) / 2;
	window.open(url,'none', 'scrollbars,status=0,location=0,toolbar=0,titlebar=0,width=' + width + ',height=' + height + ',left=' + xpos + ',top=' + ypos);
}

function changeSrc(sourceId, destId)
{
	clearStyle();
    source = document.getElementById(sourceId);
    source.className = 'borderEnabled'; 
    dest = document.getElementById(destId);
    dest.src = source.alt;
}

function clearStyle()
{
	for(i = 1; i < 6; i++) 
	{
		var elem = document.getElementById('thumb' + i);
		if (elem != null)
			elem.className = 'borderDisabled';
	}
}