function ShowWin(url, namew, w, h)
 {
   if (!w) w = 800;
   if (!h) h = 600;
   window.open(url, namew, "width="+w+",height="+h+",resizable=yes,status=no,dependent=no,scrollbars=yes");
 }

 function is_email_valid(email_str)
 {
   return (email_str.search(/[a-zA-Z0-9_][a-zA-Z0-9_-]*@([a-zA-Z0-9_-]+\.)*[a-zA-Z0-9_-]+/i)>=0);
 }


 function is_empty_str(str)
 {
   return (str.toString().replace(/ +/i,"")=="");
 }

 function ShowminiWin1(url, namew)
 {
   window.open(url, "neww", "width=550,height=300,top=200,left=400,resizable=yes,status=no,dependent=yes,scrollbars=yes");
 }

 function ShowWin2(url, namew)
 { 
   window.open(url, "neww", "top=100000000, left=10000000, width=1,height=1,resizable=yes,status=no,dependent=no,scrollbars=yes");
 }


  function ShowminiWin(url, namew)
 {
   window.open(url, "new_ww", "width=250,height=50,top=200,left=400,resizable=no,status=no,dependent=no,scrollbars=no");
 }