DPModal = {

	modal: null,

	create: function(opacity) {		
		if( opacity != 0 && !opacity ) {
			opacity = 0.3;
		}

		if( !DPModal.modal ) {
			DPModal.modal = new DIV('dp.modal_background');
			DPModal.modal.create(0, 0, 1, 1);
			//DPModal.modal.setStyle("float", "left");
			//DPModal.modal.setStyle("position", "absolute");
			//DPModal.modal.setStyle("left", "0");
			//DPModal.modal.setStyle("top", "0");
			DPModal.modal.setStyle("width", "100%");
			DPModal.modal.setStyle("height", "100%");
			DPModal.modal.setStyle("background", "#000000");
			DPModal.modal.setStyle("zIndex", "900");
		}

		DPModal.modal.setStyle("filter", "alpha(opacity:" + opacity * 100 + ", style:0)");
		DPModal.modal.setStyle("mozOpacity", opacity);
		DPModal.modal.setStyle("opacity", opacity);
		DPModal.modal.setStyle("khtmlOpacity", opacity);
	},

	show: function() {
		if( !DPModal.modal ) {
			DPModal.create();
		}
		DPModal.modal.show();
		//alert('show');
	},
	
	hide: function() {
		if( !DPModal.modal ) {
			DPModal.create();
		}
		DPModal.modal.hide();
	}
};