function formCheck(theForm){
	var errorMessage = ''; 
	if (theForm.products && theForm.products.value) {
		var products = theForm.products.value.split(",");
		for (var i=0; i<products.length; i+=2) {    
			if (eval(theForm.name + "." + products[i+1] + ".value") == "")
				errorMessage += 'Please select ' + products[i] + '.\n';
		}   
	}
	if (errorMessage != ''){
		alert(errorMessage);	
		return false;
	}
	else {
		return true;
	}
}