function contactus()
{
	if(document.contact.name.value == "")
	{
		alert("Please enter name.");
		document.contact.name.focus();
		return false;
	}
	if(document.contact.phone.value=="")
	{
		alert("Please Enter Phone.");
		document.contact.phone.focus();
		return false;
	}
	if(document.contact.email.value=="")
	{
		alert("Please Enter E-Mail.");
		document.contact.email.focus();
		return false;
	}
	var str=document.contact.email.value
		var filter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i
		if (filter.test(str))
		{
		}
		else
		{
			alert("Please Enter Valid E-Mail Address.")
	    	document.contact.email.focus();
			return false
		}
		if(document.contact.comments.value=="")
	{
		alert("Please Enter Comments");
		document.contact.comments.focus();
		return false;
	
	   
	  }
	  
	if(document.contact.security_code.value == "")
	{
	alert("Please Enter security code")
	document.contact.security_code.focus();
	return false
	}	
	 function ValidEmail(email)
	 {
		var RegExp = /^((([a-z]|[0-9]|!|#|$|%|&|'|\*|\+|\-|\/|=|\?|\^|_|`|\{|\||\}|~)+(\.([a-z]|[0-9]|!|#|$|%|&|'|\*|\+|\-|\/|=|\?|\^|_|`|\{|\||\}|~)+)*)@((((([a-z]|[0-9])([a-z]|[0-9]|\-){0,61}([a-z]|[0-9])\.))*([a-z]|[0-9])([a-z]|[0-9]|\-){0,61}([a-z]|[0-9])\.)[\w]{2,4}|(((([0-9]){1,3}\.){3}([0-9]){1,3}))|(\[((([0-9]){1,3}\.){3}([0-9]){1,3})\])))$/
		if(RegExp.test(email))
		{
			return true;
		}
		else
		{
			return false;
		}
	   
	  }
	  
	
}
function IsNumeric(sText)

{
   var ValidChars = "0123456789.";
   var IsNumber=true;
   var Char;

 
   for (i = 0; i < sText.length && IsNumber == true; i++) 
      { 
      Char = sText.charAt(i); 
      if (ValidChars.indexOf(Char) == -1) 
         {
         IsNumber = false;
         }
      }
   return IsNumber;
   
   }
}