var win=null;

function NewWindow(mypage,myname,w,h,scroll,pos)
{
	if(pos=="random")
	{
		LeftPosition = (screen.width) ? Math.floor(Math.random()*(screen.width-w)) : 100;
		TopPosition = (screen.height) ? Math.floor(Math.random()*((screen.height-h)-75)):100;
	}
	
	if(pos=="center")
	{
		LeftPosition=(screen.width)?(screen.width-w)/2:100;
		TopPosition=(screen.height)?(screen.height-h)/2:100;
	}
	else if((pos!="center" && pos!="random") || pos==null)
	{
		LeftPosition=0;
		TopPosition=20
	}
	
	settings = 'width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
	win = window.open(mypage,myname,settings);
}

function showCalc()
{
	NewWindow( 'vcalc.php', '', '800', '600', 1, 'center');
}

function showCalc_En()
{
	NewWindow( 'en_vcalc.php', '', '800', '600', 1, 'center');
}