var ctrlcode=0;
var IE5=((navigator.appVersion.indexOf("MSIE")!=-1)&&(navigator.appVersion.substr(22,1)>=5))?1:0;
var NS=(navigator.appName == 'Netscape')?1:0;





function checkKey(ob)
{
  if((IE5) || (NS)){
	if (window.event.ctrlKey)  // checks whether the ctrl key  // is pressed
	   	JM_cc(ob);
  }	
}

function JM_cc(ob){
  if ((IE5) || (NS))
{
   
	  ob.select();
	  js=ob.createTextRange();
	  js.execCommand("Copy");

   /*
	  ob.readOnly=false;
	  ob.focus();
	  ob.readOnly=true;
	  ob.blur();
  */
  }

else{
   if ((event.button == 2)||(event.button==3)){
     alert("»¶Ó­Äú·ÃÎʽðÅ©Íø(http://www.agri.com.cn)");
     return false;
       }									
    }
}

function unselect()
{
   document.selection.empty();
   
}


//////////////////////////////