Implode Form Element Array

// implodeFormArray(form name : String, form element name : String, delimiter : String);
function implodeFormArray(f, e, del) {
	var form	= document.forms[f];
	if (typeof(form.elements[e].value) != "undefined") {
		if (form.elements[e].checked) return form.elements[e].value;
		else return '';
	} else {
		var output	= '';
		var len		= form.elements[e].length;
		for(var i=0;i<len;i++) {
			if (form.elements[e][i].checked) {
				output+= (output == '' ? '':del) + form.elements[e][i].value;
			}
		}
		return output;
	}
}

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