Whoops, my mistake on putting a space in 'load me();' - it will work correctly how I showed - bar the space!
But what Charles quoted, is the one you're looking for:
<body onload="function_a(); function_b()">
“The power of the Web is in its universality. Access by everyone regardless of disability is an essential aspect.”
—Tim Berners-Lee, W3C Director and inventor of the World Wide Web