var loginBackUrl = false;

function openLightBox( boxName, backUrl )
{
	var verticaloffset = 100;
	var element = $(boxName);
	element.style.top =  verticaloffset + 'px';



	if (parseInt(navigator.appVersion)>3)
	{
		if (navigator.appName=="Netscape")
		{
			winW = window.innerWidth;
			winH = window.innerHeight;
		}
		if (navigator.appName.indexOf("Microsoft")!=-1)
		{
			winW = document.body.offsetWidth;
			winH = document.body.offsetHeight;
		}
	}

	var from_left = ( winW - 600 ) / 2;

	$( boxName ).style.left = from_left + 'px';
	$( boxName ).style.top = '0px';

	Effect.Grow( boxName, { duration: 0.5 } );

	if( backUrl )
	{
		loginBackUrl = backUrl;
	}

}

function closeLightBox( boxName )
{
	$( boxName ).hide();
	
}