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<!--把如下代码加入<body>区域中:--> <SCRIPT> <!-- function check(){ //remove this line to use the script for real var from = document.referrer var here = "http://www.downcodes.com/js/311.htm" //Change this to your site alert("From:"+from);//remove this line to use the script for real alert("Here:"+here);//remove this line to use the script for real if (from.substring(0,here.length) != here) history.back() else document.location.replace('http://www.downcodes.com/js/311.htm'); //Page to go to if OK }//remove this line to use the script for real //--> </SCRIPT> <FORM> <INPUT TYPE=button VALUE="Check" onClick="check()"> </FORM>
