function doPhpImageUpdate(actionUrl, formId, imgId) {
	var formVars = getFormVars(formId);
	actionUrl += "?action=show_image&" + formVars;
	document.getElementById(imgId).src = actionUrl;
	document.getElementById('phpImgLink').href = actionUrl+"&download=true";
	
}


function getFormVars(formId) {
	var theForm = document.getElementById(formId);
	var str = "";
	for(i=0; i< theForm.elements.length; i++)	{
		var elem = theForm.elements[i];
		if(elem.type == "radio" && !elem.checked) continue;
 		str += elem.name + "=" + escape(elem.value) + "&";
	}
	return str;
}