function submittingShip(params,el){
    if(zipCode()){
        el.disabled=true;
        el.style.filter="alpha(opacity=60)";
        el.style.opacity="0.6";
        curMainTab=8;
        makePOSTRequest('/show_ship_calc_lv.jsp',params,insertMainImgLgTab,0,0,false);
    }
}

function tryagainShip(params,el){
    el.disabled=true;
    curMainTab=8;
    makePOSTRequest('/show_calc_ship_lv.jsp',params,insertMainImgLgTab,0,0,false);
}

//check zip code if ok.
function zipCode(){
    var str=document.ship_calcFrom.tozip.value;
    var c="";
    var newStr="";
    for(var i=0;i<str.length;i++){
      c = str.charAt(i);
      if (c!=" ")
      {
        newStr=newStr+c;
      }
   }

    var selectedIndex=document.ship_calcFrom.country.selectedIndex;
    var country=document.ship_calcFrom.country.options[selectedIndex].value;
	if(newStr==""){
                alert("Please enter a zip code.");
		document.ship_calcFrom.tozip.focus();
		return false;
	}else{
            if(country==217 || country==166){
                if(newStr.length != 5 || !isNumber(newStr)){
                    alert("Please enter a 5 digits zip code.");
                    document.ship_calcFrom.tozip.focus();
                    return false;
                }else{
                document.ship_calcFrom.tozip.value=newStr;
              return true;
                }
            }else{
            document.ship_calcFrom.tozip.value=newStr;
              return true;
            }
        }
}