function checkEmail(myForm)
	{
		if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(myForm.email.value))
		{
			return (true);
		}
		alert("Invalid e-mail address! please re-enter");
		return (false);
	}

	function trim(inputString) 
	{
		if (typeof inputString != "string") { return inputString; }
		var retValue = inputString;
		var ch = retValue.substring(0, 1);
		while (ch == " ") 
		{ 
			retValue = retValue.substring(1, retValue.length);
			ch = retValue.substring(0, 1);
		}
		ch = retValue.substring(retValue.length-1, retValue.length);
		while (ch == " ") 
		{
			retValue = retValue.substring(0, retValue.length-1);
			ch = retValue.substring(retValue.length-1, retValue.length);
		}
		while (retValue.indexOf("  ") != -1) 
		{ 
			retValue = retValue.substring(0, retValue.indexOf("  ")) + retValue.substring(retValue.indexOf("  ")+1, retValue.length); 
		}
		return retValue; 
	}

	function checkContact(mf)
	{
		if(mf.fname.value=="")
		{
			alert("Please enter firstname");
			mf.fname.focus();
			return false;
		}
		if(mf.lname.value=="")
		{
			alert("Please enter lastname");
			mf.lname.focus();
			return false;
		}
		if(trim(mf.email.value)=="")
		{ 
			alert("Please enter your e-mail address");
			mf.email.focus();
			return false;
		}
		if(checkEmail(mf)==false)
		{
			mf.email.focus();
			return false; 
		}
		var valid= "+-()1234567890 ";
		if (mf.phone.value !="")
		{
			var string = mf.phone.value
			var length = string.length;
			for(var i=0;i<=length;i++)
			{
				var substring = string.substr(i,1);
				if(valid.indexOf(substring)== -1)
				{
					alert("Please enter valid telephone number");
					mf.phone.select()
					return(false)
				}
			}
		}
		if(mf.comments.value=="")
		{
			alert("Please write message/query");
			mf.comments.focus();
			return false;
		}
		return true;
	}