function digitonly(input, evt)//onkeypress="return digitonly(this,event)"
{
    var keyCode = evt.which ? evt.which : evt.keyCode;
    var lisShiftkeypressed = evt.shiftKey;
    if (lisShiftkeypressed && parseInt(keyCode) != 9) {
        return false;
    }
    if ((parseInt(keyCode) >= 48 && parseInt(keyCode) <= 57) || keyCode == 37/*LFT ARROW*/ || keyCode == 39/*RGT ARROW*/ || keyCode == 8/*BCKSPC*/ || keyCode == 46/*DEL*/ || keyCode == 9/*TAB*/) {
        return true;
    }

    return false;

}

function isAlpha(evt)//onkeypress="return isAlpha(event)"
{
    var keyCode = evt.which ? evt.which : evt.keyCode;
    if ((keyCode >= 'a'.charCodeAt() && keyCode <= 'z'.charCodeAt()) || (keyCode >= 'A'.charCodeAt() && keyCode <= 'Z'.charCodeAt()) || (keyCode >= 8 && keyCode <= 46))
        return true;
    return false;
}

function validate(input,e)//OnClientClick="return validate(this,event)"
{

    if (document.getElementById('TextBox1').value == "") {

        alert("Please Enter Name !");

        document.getElementById('TextBox1').focus();

        return false;

    }
    else if (document.getElementById('TextBox2').value == "") {
        alert("Please Enter Email_id !");

        document.getElementById('TextBox2').focus();

        return false;

    }
    else if (document.getElementById('TextBox2').value.indexOf("@") && document.getElementById('TextBox2').value.indexOf(".") == -1) {
        alert("Please Enter a Valid Email-ID");
        document.getElementById('TextBox2').focus();
        return false;
    }
    else if (document.getElementById('TextBox3').value == "") {

        alert("Please Enter Mobile No !");

        document.getElementById('TextBox3').focus();

        return false;

    }

    else if (document.getElementById('TextBox3').value.length < 10) {
        alert("Mobile No should not be less than 10 digits");
        document.getElementById('TextBox3').focus();
        return false;
    }

    else if (document.getElementById('DropDownList3').value == "Select State") {

        alert("Please Select State!");

        document.getElementById('DropDownList3').focus();

        return false;

    }

    else if (document.getElementById('TextBox4').value == "") {

        alert("Please Enter City !");

        document.getElementById('TextBox4').focus();

        return false;

    }
    else if (document.getElementById('DropDownList2').value == "Select Type") {

        alert("Please Select Type!");

        document.getElementById('DropDownList2').focus();

        return false;

    }

        var input = document.getElementById(input.id);
        input.disabled = true;
        input.value = "Please Wait...";
        e.returnValue = false;
        e.cancelBubble = true;
        document.getElementById("btnInv").click();
}