function UnDisplay(col_No)
{
el=document.getElementById(col_No);
if ((el) && (el.style))
{
el.style.display = "none";
} 
return true;
}

function UnDisplayAll()
{
var t;
t = UnDisplay("col_1");
t = UnDisplay("col_2");
t = UnDisplay("col_3");
t = UnDisplay("col_4");
t = UnDisplay("col_5");
t = UnDisplay("col_6");
t = UnDisplay("col_7");
t = UnDisplay("col_8");
t = UnDisplay("col_9");
t = UnDisplay("col_10");
return t;
}


function My_Display(prd_No, col_No)
{
var t;
t = UnDisplayAll();
be = document.getElementById(prd_No);
el=document.getElementById(col_No);
if ((el) && (be))
{
if (be.value != "0")
el.style.display = "block";
else
el.style.display = "none";
}
}