var emailReg = /^([\w-\.]+@([\w-]+\.)+[\w-]{2,4})?$/;

String.prototype.trim = function() {
	return this.replace(/^\s+|\s+$/g,"");
}


function Numbers(e){
	var keynum;
	var keychar;
	var numcheck;
	if(window.event) {// IE
	  keynum = e.keyCode;
	}
	else if(e.which) {// Netscape/Firefox/Opera
	  keynum = e.which;
	}
	if(keynum == 13 || keynum == 8 || typeof(keynum) == "undefined"){
			return true;
	}
	keychar= String.fromCharCode(keynum);
	numcheck = /^[0-9]$/;
	return numcheck.test(keychar);
}