function ShowWindow(addr,wname,wwidth,wheight){
	var sheight=0;
  var swidth=0;
  if (self.screen){
    swidth = screen.width;
    sheight = screen.height;
  }
  else if (self.java){
    var jkit = java.awt.Toolkit.getDefaultToolkit();
    var scrsize = jkit.getScreenSize();       
    swidth = scrsize.width; 
    sheight = scrsize.height; 
  }
  if (swidth==0 && sheight==0){
    swidth=760;
    sheight=550;
  }
  NewWindow=window.open(addr,wname,"scrollbars=0,top="+(sheight-wheight)/2+",left="+(swidth-wwidth)/2+",width="+wwidth+",height="+wheight);
}

function checkBForm(){
	var regForm=document.forms["bform"];
	var errorOccured=0;
	var errorMessage='';
	if (regForm.log_login.value.length<1 || regForm.log_pass.value.length<1){
	  errorOccured=1;
	  errorMessage=errorMessage+"Вы должны ввести логин и пароль!\n";
	}
	if (errorOccured==1){
	  alert(errorMessage);
	  return false;
	} else {
	  return true;
	}
}