function change(v,ind)
{
var val,index;
val=v;
if(val==0)
{

document.getElementById("quantity"+index).focus();
document.getElementById("quant"+index).value='1';
return false;
}
else {
index=ind
document.getElementById("quant"+index).value=val;
return true;
}
}
function update(ind)
{
var index,bas_id,num,oldqty,prod_id;
index=ind;
oldqty = parseInt(document.getElementById("oldquant"+index).value);
qty = parseInt(document.getElementById("quantity"+index).value);
if(document.getElementById("quantity"+index).value==0)
{
	alert("Quantity Can't be Zero");
	
	document.getElementById("quantity"+index).focus();
	document.getElementById("quant"+index).value='1';
	return false;
}
else if( oldqty < qty )
{ 
		
	alert ('Sorry limited stock! You can only buy '+oldqty+' items at the moment');
	document.getElementById("quantity"+index).focus();
	document.getElementById("quant"+index).value='1';
	return false;

}
else
{
num=document.getElementById("quant"+index).value;
bas_id=document.getElementById("bas_id"+index).value;
prod_id=document.getElementById("prod_id").value;
window.location='update_cart.php?bas_id='+bas_id+'&quantity='+num+'&prod_id='+prod_id;
return true;
}
}