var captcha_form;
  for(i=0;i <document.forms.length;i++){

		for(j=0;j<document.forms[i].elements.length;j++){
			if(document.forms[i].elements[j].name=="captcha"){
				captcha_form=document.forms[i];
				captcha_form.onsubmit=new Function("return validate_captcha()");
				break;
		   }
		}
   		if(captcha_form) break;
  }

  function validate_captcha(frm){
   	if(frm==undefined) frm=captcha_form;
	   	var arr=frm.elements;
		var i;
   		var chk=0;
		var nm=new String;

	 	var cod=-1;
	  	focusi=-1;
	  	ret=true;

		for (i=0;i<arr.length;i++){
		nm=arr[i].id;

		if(arr[i].name=="captcha" && arr[i].type=="text") cod=i;
		if(arr[i].offsetHeight && (nm.indexOf("*")>-1  || cod>-1)){
			if(arr[i].type=="select-one" || arr[i].type=="select-multiple"){
				chk=arr[i].options[arr[i].selectedIndex].value;
			}else if(arr[i].type=="radio"){
				chk=1;
			}else if(arr[i].type=="checkbox"){
				chk=arr[i].checked;
			}else if(nm.indexOf("_*_confirm")>0){
				fld=nm.replace("_*_confirm","_*");
				if(fld=document.getElementById(fld)){
			       	if(arr[i].value==fld.value && arr[i].value) {
			       		chk=1;
					}else{
						arr[i].value="";
						chk=0;
					}
	      		}
			}else{
				chk=arr[i].value;
			}
		
			if(arr[i].style.border){
				arr[i].style.border="#cccccc 2px solid";
     		}

			if (chk==0 || chk=='00.00.00' ){
				arr[i].style.border="#ff0000 2px solid";
				if(focusi==-1) focusi=i;
				ret=false;
     		}
		}
	}

   if(ret){
   		if(cod>-1){
	    	ret=checkcaptcha(arr[cod].value);
   		}

    	if(ret==1){
	    	return true;
		}else{
			arr[cod].style.border="2px solid #FF0000";
			arr[cod].value="";
			arr[cod].focus();
			return false;
		}
	}else{
		try{
			arr[focusi].focus();
		}
		catch(err){}
		return false;
   	}
  }

  function checkcaptcha(val) {
  var http_request = false;
  url="/captcha.php";
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			http_request.overrideMimeType('text/xml');
		}
	} else if (window.ActiveXObject) { // IE
	try {
		http_request = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
		try {
			http_request = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {}
	}
  }
  
  if (!http_request) {
		alert('Giving up :( Cannot create an XMLHTTP instance');
		return false;
  }
  http_request.open('POST', url, false);
  http_request.send(val);
  if(http_request.responseText==-1){
   		alert('Cookie must be enabled!');
		return 0;
  }
  return http_request.responseText;
}