simple onmouseover to call javascript not working

In a simple html page I have:

开发者_Python百科<SCRIPT>
function Clicker(number){
if (number == 1) 
document.write ('<style type="text/css">body {background-color: #cccccc;}</style>');
}
</SCRIPT>

and in the html body:

<a onmouseclick="Clicker(1)" href="#">clic</a>

But when I click on the link nothing happens. Where am I wrong?

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Writing the style block probably won't effect a change in the background colour. To do that you have to manipulate the Document object:

<script type="text/javascript">
function Clicker(number){
if (number == 1) 
    document.body.style.background='#cccccc';
}
</script>

Your click event should also be onclick:

<a onclick="Clicker(1)" href="#">clic</a>

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Simply change onmouseclick to onclick.

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You need 'onclick' like following.

<a onclick="Clicker(1)" href="#">clic</a>