function validate()
{
if(!document.getElementById('txtName').value)
{

alert("Name should not empty");
document.getElementById('txtName').focus();
return false

}
if(!document.getElementById('txtAddress').value)
{

alert("Address should not empty");
document.getElementById('txtAddress').focus();
return false

}

var digits="0123456789";
var temp;
for (var i=0;i<document.getElementById('txtPhone').value.length;i++)
{
temp=document.getElementById('txtPhone').value.substring(i,i+1);
if (digits.indexOf(temp)==-1)
{
alert("Please enter correct Phone number");
document.getElementById('txtPhone').value="";
document.getElementById('txtPhone').focus();
return false;
}
}

if(document.getElementById('txtPhone').value.length < 10)
{
alert("Mobile No should not empty");
document.getElementById('txtPhone').value="";
document.getElementById('txtPhone').focus();
return false;

}

if(!document.getElementById('txtEmail').value)
{

alert("E-mail should not empty");
document.getElementById('txtEmail').focus();
return false;

}
var emailPat = /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/;
///^(\".*\"|[A-Za-z]\w*)@(\[\d{1,3}(\.\d{1,3}){3}]|[A-Za-z]\w*(\.[A-Za-z]\w*)+)$/;
var emailid=document.getElementById('txtEmail').value;
var matchArray = emailid.match(emailPat);

if (matchArray == null)
{
alert("Your E-mail address seems incorrect. Please try again.Eg bbb@gg.com ");
document.getElementById('txtEmail').value="";
document.getElementById('txtEmail').focus();
return false;
}


if(!document.getElementById('txtRemark').value)
{

alert("Comment should not empty");
document.getElementById('txtComment').focus();
return false

}

}