function open_revenue_window()
		{ 
		var screen_height = window.screen.availHeight;
    var screen_width = window.screen.availWidth;

		var left_point = parseInt(screen_width/2)-(780/2);
		var top_point = parseInt(screen_height/2)-((screen_height-200)/2); 

		url="http://www.dealerrevenue.com";
		new_window = window.open(url,'dealerRevenue','toolbar=0,menubar=0,resizable=0,dependent=0,status=0,height=' +screen_height-200+',left='+ left_point+',top='+ top_point +',width=780,scrollbars=1')
		}