That worked! Thanks for your help.

Jim

>I tried this and worked.
>
>

>		private void Page_Load(object sender, System.EventArgs e)
>		{
>			Button1.Attributes.Add("onMouseOver",
>				"this.style.backgroundColor='red';");
>		}
>

>Unlike VB, both C# and JScript are case sensitive. I think it's 'backgroundcolor' in your code. Change it to backgroundColor and test.
>Cetin
>
>>When I use the code below in the load event of the webform, nothing happens when the mouse is over the button. The code I have is below.
>>
>>
>>*******Web Form Load Event Code ************
>>

>>Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
>>     'Put user code to initialize the page here
>>     Button2.Attributes.Add("OnMouseOver", "changecolor(this,'red');")
>>End Sub
>>

>>
>>******** Resulting HTML Code in runtime ***********
>>

>><input type="submit" name="Button2" value="Button" id="Button2" OnMouseOver="changecolor(this,'red');" style="Z-INDEX: 101; LEFT: 176px; POSITION: absolute; TOP: 136px" />
>>

>>
>>******** JavaScript Function in html code after the ******
>>

>><script language="javascript">
>>    function changecolor(oBtn, sColor)
>>      {
>>        oBtn.style.backgroundcolor = sColor;
>>      }
>></script>
>>

>>
>>
>>>Or you can do it while building the page on the server via
>>>myctl.attributes.add("onmouseover","javascript:dothis()");