I have created a new HTML component in home page and pasted this code. But it is not working. Please help.

<B>Test text for new js</B>
<SCRIPT type=text/javascript>
function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') {
        window.onload = func;
    } else {
        window.onload = function() {
            if (oldonload) {
                oldonload();
            }
            func();
        }
    }
}
addLoadEvent(function() {
    if(window.parent.document.getElementsByName("save_new" )[0]) {
        window.parent.document.getElementsByName("save_new" )[0].style.display='none';
        window.parent.document.getElementsByName("save_new" )[1].style.display='none';
    }
})
</SCRIPT>

Is there anyway to remove/hide the standard Save & New button on the edit page of Salesforce.

I don't want this action for my User and I don't have control over the standard edit page layout of Salesforce unlike the detail page layout. Please let me now if this is possible in some ways in the standard Salesforce page itself.

Regards,

Karthik.