function valid_user_key()
	{
		var nstr="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890_";
		var i=0;
		if(document.vtc.user_key.value=="")
			{
				alert ("Select a user key")
				document.vtc.user_key.focus()
				return false;
			}
		else
			{
				for(i=0;i<document.vtc.user_key.value.length;i++)
					{
						if(nstr.indexOf(document.vtc.user_key.value.charAt(i))==-1)
							{
								alert("Please enter alphonumeric character only");
								document.vtc.user_key.select()
								return false;
							}
					}
				
			}
		return true;
	}	
function valid_user_msg()
	{
		
		if(document.vtc.user_msg.value=="")
			{
				alert ("Please write your vandana")
				document.vtc.user_msg.focus()
				return false;
			}
		
		return true;
	}	


function validateform()
	{
		if(valid_user_key() && valid_user_msg())
			{
				return true;
			}
		else
			{
				return false;
			}
	}
function resetfields()
	{
		document.vtc.user_key.value=""
		document.vtc.user_msg.value=""
		document.vtc.user_key.focus()
		return false;
	}