var discnt = 0;   // no default percent discount
	 
	var coupons = new Array (  // place to put coupon codes
	  "Bellyrama!",                 // 1st coupon value - comma seperated
	  ""                 					// 2nd coupon value - add all you want
	);
	
	var coupdc  = new Array (  // place to put discounts for coupon vals
	  30,
	  0
	);
	
	var coupval = "(blanket)"; // what user entered as coupon code
	 
	function ChkCoup () {      // check user coupon entry
	  var i;
	  discnt = 0;              // assume the worst
	  for (i=0; i<coupons.length; i++) {
	    if (coupval == coupons[i]) {
	      discnt = coupdc[i];  // remember the discount amt
	      alert ("Valid coupon number! \n\n" + discnt + 
	             "% discount now in effect.");
	      return;
	    }
	  }
	  alert ("'" + coupval + "'  is not a valid code!");
	}
	 
	function Dollar (val) {      // force to valid dollar amount
	  var str,pos,rnd=0;
	  if (val < .995) rnd = 1;  // for old Netscape browsers
	  str = escape (val*1.0 + 0.005001 + rnd);  // float, round, escape
	  pos = str.indexOf (".");
	  if (pos > 0) str = str.substring (rnd, pos + 3);
	  return str;
	}
	 
	function ReadForm (obj1) {  // apply the discount
	  var amt,des, options, option_val, option_disc_val;
	  amt = obj1.baseamt.value*1.0;       // base amount
	  des = obj1.basedes.value;           // base description

	  options = $('input[type="hidden"][name^="option_amount"]', obj1);
	 
	  if (discnt > 0) {                   // only if discount is active
	  	amt = Dollar (amt - (amt * discnt/100.0));
	    des = des + ", " + discnt + "% dis, COUP = " + coupval;
	    
	    // update the option_amount# value with the calculated discount
	   	options.each(function() {
	   		if (this.value.length > 0) {
	   			option_val = this.value;
	   			option_disc_val = Dollar (option_val - (option_val * discnt/100.0));
	   		} else {
	   			option_disc_val = amt;
	   		}
	   		
	   		// reset the option_disc_val if some a-hole keeps hammering the button
	   		if (option_disc_val < amt) {
	   		  option_disc_val = amt;
	   		}
	   	
	   		// update the option's value attribute to the discounted value
	   		this.value = option_disc_val;
	 	});
	  }
	  
	  obj1.amount.value = Dollar (amt);
	  obj1.item_name.value = des;
	}