Display Image Based on Referred URL

I found the below script that will display an image based on certain date. I would like to add an additional function that will display the images when it is referred by a certain URL. IE. if users comes from yahoo.com they will see the special holiday graphic and if users comes from google.com they will see the default image.

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 <html>

<head>

<title>holiday image demo</title>

<script type="text/javascript">
 
var holiday = [

[ "1015", "1101", "halloween.jpg" ],

[ "1210", "1226", "christmas.jpg" ],

[ "1227", "1231", "newyear.jpg" ],

[ "0101", "0102", "newyear.jpg" ]

];
 
function disable(){return false}
 
function setImgByDate(imgRef,dateList) {

imgRef.onload = disable;

var today = new Date();

var month = 1+today.getMonth();

if (month<10) month = "0"+month;

var date = today.getDate();

if (date<10) date = "0"+date;

var MMDD = ""+month+date;

for (var i=0; i<dateList.length; i++) {

if (MMDD>=dateList[i][0] && MMDD<=dateList[i][1]) {

imgRef.src = dateList[i][2];

return;

}

}

}

</script>

</head>

<body>

<img src="default.jpg"

onload="setImgByDate(this,holiday)">

</body>

</html>

How can this be accomplished? Please assist.

Aug 8 '07 #1

Subscribe Post Reply

3532

pbmods

5,821

Expert 4TB

Heya, abstractj. Welcome to TSDN!

Check out document.referrer.

Aug 9 '07 #2

abstractj

So I tried testing the following and the script did not work. There were no error displayed... I'm not sure what I did wrong. I just want to display "Thanks for visiting this site" if the referrer URL comes from http://www.mysite.com/referrer.html

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<script language="Javascript">

<!-- 
 
if (document.referrer="http://www.mysite.com/referrer.html")

  document.write('Thanks for visiting this site');
 
//-->

</script>

Aug 9 '07 #3

pbmods

5,821

Expert 4TB

Heya, Abstract.

Please use CODE tags when posting source code. See the REPLY GUIDELINES on the right side of the page next time you post.

Perhaps you meant to use '==' instead of '='.

Aug 9 '07 #4

abstractj

Okay, reading more on the subject and googling around I was able to find a code and hack it where it fits my need.

Where the indexOf will display the "you're from mysite.com" message if the referrer is coming from any page that is on mysite.com.

Thanks for the direction PBmods.

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<SCRIPT LANGUAGE="JavaScript">

if(document.referrer.length > 0 && document.referrer.indexOf("http://www.mysite.com") != -1){

    document.write("you're from mysite.com")

} else {

    document.write("you're not from mysite.com")

}

</SCRIPT>

Aug 9 '07 #5

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