function ChangeFocus(obj)
		{
			for(i=0;i<document.getElementById("leftButtonTAble").rows.length;i++)
			{
				 if(document.getElementById("leftButtonTAble").rows[i].cells[0]==obj)
				 {
				  document.getElementById("leftButtonTAble").rows[i].cells[0].className="DivAround_focus";
				  if (i == 0 )
				  {
				  	document.getElementById("content1").style.display="block";
					document.getElementById("content2").style.display="none";
					document.getElementById("content3").style.display="none";
					document.getElementById("content4").style.display="none";
				  }
				  else if ( i== 1)
				  {
				  	document.getElementById("content1").style.display="none";
					document.getElementById("content2").style.display="block";
					document.getElementById("content3").style.display="none";
					document.getElementById("content4").style.display="none";
				  }
				  else if (i ==2 )
				  {
				  	document.getElementById("content1").style.display="none";
					document.getElementById("content2").style.display="none";
					document.getElementById("content3").style.display="block";
					document.getElementById("content4").style.display="none";
				  }
				  else if (i ==3 )
				  {
				  	document.getElementById("content1").style.display="none";
					document.getElementById("content2").style.display="none";
					document.getElementById("content3").style.display="none";
					document.getElementById("content4").style.display="block";
				  }
				 }else{
				  document.getElementById("leftButtonTAble").rows[i].cells[0].className="DivAround_blur";
				 }
			}
		}

		function check_feedback_data()
		{
			if (document.getElementById("b_name").value =="")
			{
				alert("Please Enter Your Name.");
				document.getElementById("b_name").focus();
				return false;
			}
			if (document.getElementById("b_email").value =="")
			{
				alert("Please Enter Your Email.");
				document.getElementById("b_email").focus();
				return false;
			}
			if (document.getElementById("b_message").value =="")
			{
				alert("Please Enter Message.");
				document.getElementById("b_message").focus();
				return false;
			}
			return true;
		}

		function check_ask_question_data()
		{
			if (document.getElementById("q_customer_name").value =="")
			{
				alert("Please Enter Your Name.");
				document.getElementById("q_customer_name").focus();
				return false;
			}
			if (document.getElementById("q_email").value =="")
			{
				alert("Please Enter Your Email.");
				document.getElementById("q_email").focus();
				return false;
			}
			if (document.getElementById("q_title").value =="")
			{
				alert("Please Enter Subject.");
				document.getElementById("q_title").focus();
				return false;
			}
			if (document.getElementById("q_message").value =="")
			{
				alert("Please Enter Message.");
				document.getElementById("q_message").focus();
				return false;
			}
			return true;
		}

		function check_report_problem_data()
		{
			if (document.getElementById("r_name").value == "")
			{
				alert("Please enter your name.");
				document.getElementById("r_name").focus();
	    		return false;
			}
			var email = document.getElementById("r_email").value;
			var emailPat=/^(.+)@(.+)$/;
			var specialChars="\\(\\)<>@,;:\\\\\\\"\\.\\[\\]";
			var validChars="\[^\\s" + specialChars + "\]";
			var quotedUser="(\"[^\"]*\")";
			var atom=validChars + '+';
			var word="(" + atom + "|" + quotedUser + ")";
			var userPat=new RegExp("^" + word + "(\\." + word + ")*$");
			var domainPat=new RegExp("^" + atom + "(\\." + atom +")*$")
			var matchArray = email.match(emailPat);
			if (matchArray==null)
			{
				alert("Email address seems incorrect (check @ and .'s)");
				document.getElementById("r_email").focus();
				return false
			}
			var user=matchArray[1];
			var domain=matchArray[2];
			if (user.match(userPat)==null)
			{
				alert("Email address is invalid: " + email);
				document.getElementById("r_email").focus();
			    return false;
			}
			var domainArray=domain.match(domainPat)
			if (domainArray==null)
			{
				alert("Email address is invalid.");
				document.getElementById("r_email").focus();
			    return false;
			}


			if (document.getElementById("r_url").value == "")
			{
				alert("Please enter URL.");
				document.getElementById("r_url").focus();
	    		return false;
			}
			if (document.getElementById("r_message").value == "")
			{
				alert("Please enter Message.");
				document.getElementById("r_message").focus();
	    		return false;
			}
			return true;
		}
		
function setTab(name,cursel,n)
{
	for(i=1;i<=n;i++)
	{
  		var menu=document.getElementById(name+i);
  		var con=document.getElementById("con_"+name+"_"+i);
  		menu.className=i==cursel?"hover":"";
  		con.style.display=i==cursel?"block":"none";
	}
}