//dimScreen()
//by Brandon Goldman
jQuery.extend(
{
    	//dims the screen
    	dimScreen: function(speed, opacity, callback) 
	{
        	if(jQuery('#__dimScreen').size() > 0) 
			return;
        	if(typeof speed == 'function')
		{
            		callback = speed;
            		speed = null;
        	}
        	if(typeof opacity == 'function') 
		{
            		callback = opacity;
            		opacity = null;
        	}
        	if(speed < 1) 
		{
            		var placeholder = opacity;
            		opacity = speed;
            		speed = placeholder;
        	}
        	if(opacity >= 1) 
		{
            		var placeholder = speed;
            		speed = opacity;
            		opacity = placeholder;
        	}
        	speed = (speed > 0) ? speed : 500;
        	opacity = (opacity > 0) ? opacity : 0.1;
		return jQuery('<div></div>').attr(
		{
                	id: '__dimScreen'
                	,fade_opacity: opacity
                	,speed: speed
            	}).css(
			{
            			background: '#CAF4DC'
            			,//height: ($(document).height()-100)  + 'px'
	    			height: '550px'
            			,left: '50px'
            			,opacity: 0
            			,position: 'absolute'
            			,top: '50px'
            			//,width: ($(document).width()-300) + 'px'
	    			,width: '920px'
            			,zIndex: 999
        		}
			).appendTo(document.body).fadeTo(speed, 0.7, callback);
		},
    dimScreen2: function(speed, opacity, callback) 
	{
        	if(jQuery('#__dimScreen').size() > 0) 
			return;
        	if(typeof speed == 'function')
		{
            		callback = speed;
            		speed = null;
        	}
        	if(typeof opacity == 'function') 
		{
            		callback = opacity;
            		opacity = null;
        	}
        	if(speed < 1) 
		{
            		var placeholder = opacity;
            		opacity = speed;
            		speed = placeholder;
        	}
        	if(opacity >= 1) 
		{
            		var placeholder = speed;
            		speed = opacity;
            		opacity = placeholder;
        	}
        	speed = (speed > 0) ? speed : 500;
        	opacity = (opacity > 0) ? opacity : 0.1;
		return jQuery('<div></div>').attr(
		{
                	id: '__dimScreen'
                	,fade_opacity: opacity
                	,speed: speed
            	}).css(
			{
            			background: '#2887C2'
            			,//height: ($(document).height()-100)  + 'px'
	    			height: '550px'
            			,left: '50px'
            			,opacity: 0
            			,position: 'absolute'
            			,top: '50px'
            			//,width: ($(document).width()-300) + 'px'
	    			,width: '920px'
            			,zIndex: 999
        		}
			).appendTo(document.body).fadeTo(speed, 0.7, callback);
		},
    	//stops current dimming of the screen
    	dimScreenStop: function(callback) 
	{
        	var x = jQuery('#__dimScreen');
        	var opacity = x.attr('fade_opacity');
        	var speed = x.attr('speed');
        	x.fadeOut(speed, function() 
		{
            		x.remove();
            		if(typeof callback == 'function') 
				callback();
        	});
    	}
}

);