function validateAdvancedSearch(f) {

	if (isBlank(f.keyword.value)) {
		alert('A keyword must be entered');
		f.keyword.focus();
		return false;
	}
	

	if (!isBlank(f.priceLow.value) && !isNumber(f.priceLow.value)) {
		alert('The low price range value must be numeric');
    		f.priceLow.focus();
		return false;
	}
	
	if (!isBlank(f.priceHigh.value) && !isNumber(f.priceHigh.value)) {
		alert('The high price range value must be numeric');
		f.priceHigh.focus();
		return false;
	}

}

function validateSearch(f) {
	if (isBlank(f.keyword.value) || f.keyword.value=="Enter Keyword") {
		alert('A keyword must be entered');
		f.keyword.focus();
		return false;
	}
}

function submitMultipleAddToBasket(f){
	var ProductCodeList = ""
	var QuantityList = ""
	
	for (var i=0;i<f.quantity.length;i++) {
		if ((!isBlank(f.quantity[i].value)) && (isValidQty(f.quantity[i]))) { 
			QuantityList += f.quantity[i].value + ","
			ProductCodeList += f.productCode[i].value + ","
		}
		else{
		
		//return false
		}
	}

	if (isBlank(QuantityList)) {
		alert('At least one valid quantity must be entered.');
		return false;
	}

	// remove trailing comma
	if (ProductCodeList.length > 0) {
		ProductCodeList = ProductCodeList.substring(0,ProductCodeList.length-1)
		QuantityList = QuantityList.substring(0,QuantityList.length-1)
		f.ProductCodeList.value = ProductCodeList
		f.QuantityList.value = QuantityList
		return true
	} 
	else {
		return false
	}
}