/*
    TPMS: C. Cunningham - 2091005
    js functions to support the envelope printing process.
*/

envPrintVarBase = new Array();
envPrintVarBase['129782129784'] = 125;
envPrintVarBase['129783129784'] = 186;
envPrintVarBase['129782129785'] = 194;
envPrintVarBase['129783129785'] = 260;

function toggleEnvPrintOptions(){
    if (document.getElementById('env_prnt_opt').style.display == 'none'){
        update_print_options();
        document.getElementById('env_prnt_opt').style.display='';
        document.getElementById('view_env_prnt_opt').value='Hide Envelope Printing Options';
    } else {
        document.getElementById('env_prnt_opt').style.display='none';
        document.getElementById('view_env_prnt_opt').value='<- Print This Envelope';
    }    
}

function update_print_options(){
    var prnt_colors = document.getElementById('sel_print_colors').value;
    var prnt_qty = document.getElementById('sel_print_qty').value;
    var prnt_coating = document.printingorderform.po16107.value;
    
    var discount_statement = "";
    var discount_price = "";
    var order_desc = "";
    
    var p_ndx = prnt_colors + prnt_coating + prnt_qty;
    var price = envPrintVars[p_ndx];
    
    var sndx = document.getElementById('sel_print_qty').selectedIndex;
    var qty = parseInt(document.getElementById('sel_print_qty').options[sndx].text);
   
    // show discount for quantities above 500
    if (prnt_qty != '129786'){
        var b_ndx = prnt_colors + prnt_coating;
        var base_price = envPrintVarBase[b_ndx];
        var full_cost = (base_price * 2) * (qty / 1000); 
        var discount = 100 - (price / full_cost * 100);
        discount = Math.round(discount);
        var discount_statement = "You save <span class='ep-savings-pct'>" + discount + "%</span> on envelope printing!!!</br />";

        discount_price = "$" + full_cost;        
    } 
    
    order_desc += (prnt_colors == '129782') ? "1 " : "2 ";
    order_desc += "Color Printing on ";
    order_desc += qty + " ";
    order_desc += (prnt_coating == '129784') ? "Uncoated " : "Metallic or Translucent ";
    order_desc += "Envelopes";    
    
    document.printingorderform.po16106.value = prnt_colors;
    document.printingorderform.po16108.value = prnt_qty;
    
    document.getElementById("printing_price").innerHTML = "&nbsp;&nbsp;$" + price
    document.getElementById("discount_statement").innerHTML = discount_statement;
    document.getElementById("printing_fullprice").innerHTML = discount_price;
    document.getElementById("print_order_desc").innerHTML = order_desc;
}