creating a car hire website... i need a form to populate a specific field once another field has been selected (depending on date that has been selected, cars field is populated) the twists... there are 3 seasons: low = 28th Oct (this year) - 9th March (next year) LOW CAR PRICES med = 10th March (this year) - 22nd June (this year) MED CAR PRICES high = 23rd June (this year) - 27th Oct (this year) HIGH CAR PRICES formulas: depending on the date selected (2x select fields (day&month)) the cars field must be populated as well as a low.js/med.js/high.js file with my formulas must be included on the page to calculate the quote. forms: the data in the fields on the 'quick quote' form must be able to carry to a main reservation page (same formula as above must apply). only using PHP / Javascript (mysql if needed but prefer not to use - should be able to sort with php / jscrpt.) hope this makes sense... relpy / pm with quotes etc. Daniel