function fmcb(r) {
    var el=ge("form");
    if(el) { el.innerHTML=r.responseText;}
}

function send_form() {
    var url= _rt + "contact_form1.php",fm,msg="",i,a,v,
	fs=['name','email','phone','heard_you_from','message','submit'];
    fm=document.contact_form;
    if(fm.name.value=="" || fm.email.value==""||fm.phone.value=="") {
	alert("Please fill in all the fields on the form.");
	return false;
    }
    for(i=0; i<fs.length; i++) {
	a=fs[i];
	v=fm[a].value;
	msg += a + "=" + escape(v) + '&';
    }
    http_load(url,fmcb,{},msg);
    return false;
}