I've developed a web map using ArcGIS API for JavaScrip version 3.8 and its not compatible with IE 7 or 8. I've advised the people who have reported this to update their version of IE but, if it doesn't involve rewriting the website, I'd like to offer something that can work with these versions.
Here's the website: http://il.water.usgs.gov/data/mchenry/map.php
I have added some script that changes the markup and css to handle HTML in IE versions lower than 9 found here: https://stackoverflow.com/questions/5449502/html5-and-css3-for-ie7-and-ie8
Since doing this, I've noticed that the map loads on zoom in/out but none of my points load.