function validateEmail(em){
	var regEx=/\b[\w\d_-]+\.?[\w\d_-]+@[\w\d]+(\.[\w\d_-]{2,4}){1,2}\b/i;
	return regEx.test(em)
}
function trim(str)
{
	if(typeof(str)=='undefined' || str==''){
		return '';
	}else{
		return str.replace(/^\s*|\s*$/g,"");
	}

}
function getRequestBody(oForm) {

	var oParams = {};

	for (var i=0 ; i < oForm.elements.length; i++) {
		var oField = oForm.elements[i];
		switch (oField.type) {
			case "button":
			case "submit":
			case "reset":
				break;

			case "checkbox":
			case "radio":
				if (!oField.checked) {
					break;
				}

			case "text":
			case "hidden":
			case "password":
				oParams[oField.name] = oField.value;
				break;

			default:

				switch(oField.tagName.toLowerCase()) {
					case "select":
						oParams[oField.name] =
								oField.options[oField.selectedIndex].value;
						break;
					default:
						oParams[oField.name] = oField.value;
				}
		}

	}

	return oParams;
}