Код:
<body>
<form onmouseout="change('#00FF00')" onmouseover="change('yellow')">
<p><input class="initial2" onclick="jumpto2('https://pc.forum-top.ru/')"
type="button" value="ВВЕДИТЕ ВАШ ТЕКСТ "
style="font-family: MS Sans Serif; font-size: 8; background-color: rgb(0,255,0); font-weight: normal"></p>
</form>
</body>
</html>
<script>
<!--
function change(color){
var el=event.srcElement
if (el.tagName=="INPUT"&&el.type=="button")
event.srcElement.style.backgroundColor=color
}
function jumpto2(url){
window.location=url
}
//-->
</script>