// navigation popup
function shownavpop(obj) {
    if (document.getElementById) {
    document.getElementById(obj).style.visibility="visible";
    }
    else if (document.all) { 
    document.all[obj].style.visibility="visible";
    }
}
function hidenavpop(obj) {
    if (document.getElementById) {
    document.getElementById(obj).style.visibility="hidden";
    }
    else if (document.all) {
    document.all[obj].style.visibility="hidden";
    }
}

//privacy statement popup window
	function popWin(mypage) {
		var a_width = screen.availWidth;
		var a_height = screen.availHeight;
		var w = a_width/3;
		var h = a_height/1.75;
		var pad = a_width * .05;
		var l_pos = (a_width - w) - pad;
		var t_pos = 0;
		var settings = 'height='+h+',width='+w+',top='+t_pos+',left='+l_pos+',toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0,dependant=yes';

		pop = window.open(mypage,"WindowName",settings);
		}
//poster show popup window
function posterpop(mypage, win_name) {
		var a_width = screen.availWidth;
		var a_height = screen.availHeight;
		var w = a_width/3;
		var h = a_height/1.75;
		var l_pos = screen.width/4;
		var t_pos = screen.height/5;
		var settings = 'height='+h+',width='+w+',top='+t_pos+',left='+l_pos+',toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0';

	w = window.open(mypage,win_name,settings);
	}
//poster description popup window
function desc_win(pg,n) {
		var a_width = screen.availWidth;
		var a_height = screen.availHeight;
		var w = a_width/3;
		var h = a_height/2;
		var pad = a_width * .02;
		var l_pos = (a_width - w) - pad;
		var t_pos = 0;
		var settings = 'height='+h+',width='+w+',top='+t_pos+',left='+l_pos+',toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=0';

	desc = window.open(pg,n,settings);
	}