var new_win;

/*Opens a new window*/
function openPopUp(url,w,h)
{
	window_left = (screen.width - w)/2;
	window_top = (screen.height - h)/2;
	var settings = '"toolbar=no, directories=no, scrollbars=yes, menubar=no, width='+w+', height='+h+', left='+window_left+', top='+window_top+'"';
	closeWindow();
	var new_win = window.open(url,'winname',settings);
	new_win.focus();
}

/*Closes window*/
function closeWindow()
{
	if(new_win && !new_win.closed){
		new_win.close();
	}
}

/*Prints Content within Window*/
function printWindow(){
	window.print();
}