function OpenWindow(URLtoOpen, windowName, windowHeight, windowWidth)
{  
   var sizestring = 'width=' + windowWidth + ',height=' + windowHeight;	
   var top='top='+((screen.height/2)-windowHeight/2);
   var left='left='+((screen.width/2)-windowWidth/2);
   SmallWin = window.open(URLtoOpen,windowName,'scrollbars,resizable,' + sizestring + ',' + top + ',' + left + ',toolbar=0,location=0,status=0,directories=0,menubar=0');	
}

function openNewWindow(URLtoOpen, windowName, itemname) 
{
  newWindow2=window.open("\letter.htm", "letter", "height=500,width=400,toolbar=no");
}