function MmToInch(src, tar, ratio)
{
    var source = document.getElementById(src);
    var target = document.getElementById(tar);
    if(source.value != '' && !isNaN(source.value))
    {
        target.value = (parseInt(source.value) / ratio).toFixed(2);
    }
    else
    {
        target.value ='';
    }
}

function InchToMm(src, tar, ratio)
{
    var source = document.getElementById(src);
    var target = document.getElementById(tar);
    if(source.value != '' && !isNaN(source.value))
    {
        target.value = Math.ceil(parseFloat(source.value) * ratio);
    }
    else
    {
        target.value ='';
    }
}

function HideContainer(ele)
{
    ele = document.getElementById(ele);
    ele.style.display = 'none';
}

function CheckEnter(e, ele)
{
    if (!e) e = window.event;
    key = e.keyCode ? e.keyCode : e.which;
    if (key == 13) {    
       HideContainer(ele);    
       return false;     
    }
}