I found my mistake:
//Environmental Services$(xml).find('EnvironmentalServices Product').each(function()
{
//Add Product Names To List $(this).find("prd_name").each(function(){
var name = $(this).text();
DataList.push(String(name));
});
//Add Product Codes To List$(this).find("prd_code").each(function(){
var code = $(this).text();
DataList.push(String(code));
});
//Add Product Descriptions To List$(this).find("prd_description").each(function(){
var description = $(this).text();
DataList.push(String(description));
});
});