function giveFocus(form) {
	var formParts, i, element;
	if (!form || !form.elements) return;
	for (i in form.elements) {
		var element = form.elements[i];
		if (element && element.nodeName == 'INPUT' && element.type == 'text') {
			element.focus();
			break;
		}
	}
}

window.onload = function() {
	giveFocus(document.forms.mainform);
}