/***************************/
// Based on tutorial by Adrian "yEnS" Mato Gondelle from www.yensdesign.com.		
/***************************/

// 0 is disabled, 1 is enabled.
var popupEnabled = false;

function loadPopup(ad) {

	// Load popup only if it is currently disabled.
	if(!popupEnabled){
	
		jQuery(ad + "bg").css({"opacity": "0.7"});
		jQuery(ad + "bg").fadeIn("slow");
		jQuery(ad).fadeIn("slow");
		popupEnabled = true;
	}
}

function disablePopup(ad) {

	// Disable popup only if it is currently enabled.
	if(popupEnabled){
	
		jQuery(ad + "bg").fadeOut("slow");
		jQuery(ad).fadeOut("slow");
		popupEnabled = false;
	}
}

jQuery.fn.center = function() {

    this.css("position","absolute");
    this.css("top", ((jQuery(window).height() - this.outerHeight()) / 2) + jQuery(window).scrollTop() + "px");
    this.css("left", ((jQuery(window).width() - this.outerWidth()) / 2) + jQuery(window).scrollLeft() + "px");
    return this;
}

function centerPopup(ad) {

	jQuery(ad).center();
}

// When document loads.
jQuery(document).ready(function() {

	// Click on small ad, so launch popup.
	jQuery("#sensuad").click(function() {
	
		centerPopup("#sensuadpopup");
		loadPopup("#sensuadpopup");
	});
	
	// Click out event.
	jQuery("#sensuadpopupbg").click(function() {
	
		disablePopup("#sensuadpopup");
	});
});