function Lightup( url ) { 

	$.blockUI.defaults.css.border = '2px solid #fff'; 
	$.blockUI.defaults.css.top = '20%'; 
	$.blockUI( { css: { left: ( (screenWidth()/2) - 240), width: '480px' }, message: $('#LightBox') } ); 

	if ( url ) {
		$('#LightBoxContent').load(url);
	}

	return false;

}; 


function screenWidth() {
    if ( window.innerWidth ) {
        return window.innerWidth;
	} else {
	return document.documentElement.clientWidth;
	}
}