function OpenWindow(location,win_name,stuff) 
{ 
	window.open(location,win_name,stuff);
}

var submitcount = 0;

function preventDoubleSubmit() 
{

	if (submitcount == 0)
	{
		submitcount++;
		return true;
	}
	else 
	{
		alert("This form has already been submitted.  Thanks!");
		return false;
	}
	
}

function PlayCourse(url){
	Lvl_openWin(url,'course','1014','680','0','0','1','width=1014,height=680,status=yes,resizable=yes');
}

function Lvl_openWin(u,n,w,h,l,t,c,f) {
  var x=((screen.width-w)/2);if(c==1){l=x;t=(screen.height-h)/2;}if(c==2){l=x}
	f+=',top='+t+',left='+l;LvlWin=window.open(u,n,f);LvlWin.focus();
}