function validateForm() {
		
	//text validation
	if (document.forms[0].fname.value == '')
	{
		alert('First name is required.');
		return false;		
	}
	
	//check length of text value
	if (document.forms[0].fname.value.length < 2 || document.forms[0].fname.value.length > 20)
	{
		alert('First name should be 2-20 characters.');
		return false;		
	}
	//text validation
	if (document.forms[0].sname.value == '')
	{
		alert('Last name is required.');
		return false;		
	}
	
	//selection list validation
	if (document.forms[0].city.value == 'Select city')
	{
		alert('Select a city.');
		return false;		
	}
	
	if (confirm('Do you want to continue?'))
	{
		set
		return true;
	}
	else
		return false;
}