function popCalculator(location){

        popup = window.open(location, "calculator","height=575,width=350,scrollbars=no")

}

function popTutorial(location){

        popup = window.open(location, "calculator","height=350,width=500,scrollbars=yes")

}

function popShipping(location){

        popup = window.open(location, "shipping","height=350,width=350,scrollbars=yes")

}

function popSpecial(location){

        popup = window.open(location, "special","height=320,width=350,scrollbars=yes")

}
function popCustom(location){

        popup = window.open(location, "custom","height=320,width=350,scrollbars=yes")

}