function showMsg(elementName,status) {
  
  if(status=="show"){
  	document.getElementById(elementName).style.display = "block;";				 
  }else{
    document.getElementById(elementName).style.display = "none;";	
  }
 }

 function PopupCenter(pageURL, title,w,h) {
var left = (screen.width/2)-(w/2);
var top = (screen.height/2)-(h/2);
var targetWin = window.open (pageURL, title, 'toolbar=yes, location=yes, directories=no, status=yes, menubar=yes, scrollbars=yes, resizable=yes, copyhistory=no, width='+w+', height='+h+', top='+top+', left='+left);
}