var gh_rates = new Object; 
gh_rates['usd']=1.58; 
gh_rates['gbp']=1; 
gh_rates['eur']=1.21; 
gh_rates['aud']=1.48; 
gh_rates['zar']=12.23; 
gh_rates['cad']=1.58; 
gh_rates['chf']=1.45; 
gh_rates['thb']=48.96;