Escape function for AJAX

encodeValue.js

function encodeValue(val){
	var encodedVal;
	if(!encodeURIComponent){
		encodedVal = escape(val);
		//Fix the omissions
		encodedVal = encodedVal.replace(/@/g, '%40');
		encodedVal = encodedVal.replace(/\//g, '%2F');
		encodedVal = encodedVal.replace(/\+/g, '%2B');
	}
	else{
		encodedVal = encodeURIComponent(val);
		//Fix the omissions
		encodedVal = encodedVal.replace(/~/g, '%7E');
		encodedVal = encodedVal.replace(/!/g, '%21');
		encodedVal = encodedVal.replace(/\(/g, '%28');
		encodedVal = encodedVal.replace(/\)/g, '%29');
		encodedVal = encodedVal.replace(/'/g, '%27');
	}
	//Clean up the spaces and return
	return encodedVal.replace(/\%20/g, '+');
}