function nwin(turl,wd,hd) {
   tt=(screen.height-hd)/2;
   ll=(screen.width-wd)/2;
   winn=window.open(turl,"","scrollbars=yes,resizable=yes,status=no,width="+wd+",height="+hd+",top="+tt+",left="+ll);
   winn.focus();
   return false;
}

function swaypic(pic,p) {
   if (pic!=null) {pic.src=p;}
}

function GetFileType(fn) {
   if (fn=="") {tfn="";}
   else {
      i=fn.length;
      tem=fn.substring(i-3,i);
      tem=tem.toLowerCase();
	  tfn=tem;
   }
   return tfn;	  
}

function showpic(url) {
   var npic=new Image();
   npic.src=url;
   wd=npic.width+24;
   hd=npic.height+24;
   tt=(screen.height-hd)/2;
   ll=(screen.width-wd)/2;
   winn=window.open("showpic.asp?url="+url,"","scrollbars=no,resizable=no,status=no,width="+wd+",height="+hd+",top="+tt+",left="+ll);
   winn.focus();
   return false;   
}

function sendinf(sus) {
   window.open("/Schoolweb/note/default.asp?user="+sus,"","width=400,height=215,top="+(screen.height-215)/2+",left="+(screen.width-400)/2);
   return false;
}