function validation()
{
	if(checkBlank(document.form1.name.value))
	{
	alert("Please enter name");
	document.form1.name.focus();
	return false;
	}
	if(checkBlank(document.form1.site.value))
	{
	alert("Please enter your url");
	document.form1.site.focus();
	return false;
	}

	if(!checkBlank(document.form1.site.value))
	{
		if(!checkURLMain(document.form1.site.value))
		{
			document.form1.site.focus();
			return false;
		}
	}

	if(checkBlank(document.form1.name.value))
	{
	alert("Please enter your name");
	document.form1.name.focus();
	return false;
	}
	if(!checkBlank(document.form1.name.value))
	{
		if(!checkSpecialChars(document.form1.name.value))
		{
		alert("Only characters are allowed in name field");
		document.form1.name.focus();
		return false;
		}
	}
	 if(checkBlank(document.form1.phone.value))
    	{ 
			alert("Please enter your phone number");
			document.form1.phone.focus();
			return false;
		}
		
		if(document.form1.phone.value.length > 11)
	    {
	     alert("Phone number must be less then 11 character!")
		 document.form1.phone.focus();
		 return false
	 	}

       if(!checkBlank(document.form1.phone.value))
	   {
		   if(!checkPhone(document.form1.phone.value))
			{ 
               alert("Please enter valid phone number");
			  document.form1.phone.focus();
			   return false;
			}
		}
	if(checkBlank(document.form1.email.value))
	{
			alert("Please enter your email ID")
			document.form1.email.focus()
			return false
	}
	if(!checkBlank(document.form1.email.value))
	{
		if (!checkEmail(document.form1.email.value))
		{
			alert("Please enter valid email address")
			document.form1.email.focus()
			return false
		}
	}
  if(checkBlank(document.form1.comments.value))
	{
			alert("Please enter your comments")
			document.form1.comments.focus()
			return false
	}
   
}