/*
	'params.show' makes script to OPEN or CLOSE waiting overlay
	'params.source' provides source image for overlay

 */


function waitOverlay(params) {
	var e = params.ev;
	var isNotCtrl = (window.event && !window.event.ctrlKey) || !e.ctrlKey;
	if( params.show == 1 ) {
		if(isNotCtrl){
			var overlay = document.createElement('div');
			jQuery(overlay).attr('id', 'waitingProgress');
			jQuery('body').append(overlay);
			jQuery(overlay).css({
				backgroundImage: 'url('+$('#'+params.source).attr('src')+')',
				height: jQuery(window).height()
			});
		}
	} else if( params.show == 0 ) {
		jQuery('#waitingProgress').remove();
	}
}