// JavaScript Document
function checkIt(evt) {
evt = (evt) ? evt : window.event
var charCode = (evt.which) ? evt.which : evt.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
status = "This field accepts numbers only."
return false
}
status = ""
return true
}

function isInteger(s)
{
var i;
s = s.toString();
for (i = 0; i < s.length; i++)
{
 var c = s.charAt(i);
 if (isNaN(c)) 
{
alert("Given value is not a number");
return false;
}

}
return true;
}


function increment(val)
{
var oldtxtvalue = document.getElementById(val).value; 
document.getElementById(val).value=oldtxtvalue;   
if (oldtxtvalue == "")
{
oldtxtvalue = 1;
}
var newtxtvalue = parseInt(oldtxtvalue) + 1;
document.getElementById(val).value = newtxtvalue;
}

function decrement(val)
{
var oldtxtvalue = document.getElementById(val).value;
document.getElementById(val).value=oldtxtvalue;   
if (oldtxtvalue == "")
{
oldtxtvalue = 1;
}
var newtxtvalue = oldtxtvalue - 1;
if ( newtxtvalue <= 0 )
{
alert("The minimum purchase quantity for an item is 1")
}
else
{
document.getElementById(val).value = newtxtvalue;
}
}


// JavaScript Document
function checkIt1(evt) {
evt = (evt) ? evt : window.event
var charCode = (evt.which) ? evt.which : evt.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57)) {
status = "This field accepts numbers only."
return false
}
status = ""
return true
}

function isInteger(s)
{
var i;
s = s.toString();
for (i = 0; i < s.length; i++)
{
 var c = s.charAt(i);
 if (isNaN(c)) 
{
alert("Given value is not a number");
return false;
}

}
return true;
}


function increment1()
{
var oldtxtvalue = document.getElementById("Qty").value; 
document.getElementById("Qty").value=oldtxtvalue;
//alert(document.getElementById("Qty").value);
if (oldtxtvalue == "")
{
oldtxtvalue = 1;
}
var newtxtvalue = parseInt(oldtxtvalue) + 1;
document.getElementById("Qty").value = newtxtvalue;
}

function decrement1()
{
var oldtxtvalue = document.getElementById("Qty").value;
document.getElementById("Qty").value=oldtxtvalue;
if (oldtxtvalue == "")
{
oldtxtvalue = 1;
}
var newtxtvalue = oldtxtvalue - 1;
if ( newtxtvalue <= 0 )
{
alert("The minimum purchase quantity for an item is 1")
}
else
{
document.getElementById("Qty").value = newtxtvalue;
}
}