function changeClasses(currentdoc) {
             
                var inputElements = currentdoc.getElementsByTagName('input');
	            for (var i=0; i<inputElements.length; i++) {
		if(inputElements[i].type == "submit") {
			inputElements[i].className = inputElements[i].className + " submit";
		} else if (inputElements[i].type == "checkbox") {
			inputElements[i].className = inputElements[i].className + " checkbox";
		} else if (inputElements[i].type == "radio") {
			inputElements[i].className = inputElements[i].className + " radio";
		} else if (inputElements[i].type == "text") {
			inputElements[i].className = inputElements[i].className + " textbox";
		}
	}
}