function newWindow(newContent)
 {
  winContent = window.open(newContent, 'nextWin', 'right=0, top=120, left=300, width=500,height=550, toolbar=no,scrollbars=yes, resizable=no')         
 }// JavaScript Document
 
 function closeWindow(){
	window.close();	 
}

function mainWin(name){
	
	window.open(name,'mainWindow');
	closeWindow();
}