function valid()
{
	var f = document.form1;
	if(f.subject.value=="")
	{
		alert("All Fields are Mandatory. Please Select Subject.");
		f.subject.focus();
		return false;
	}
	if(f.name.value.search(/\S/)==-1)
	{
		alert("All Fields are Mandatory. Please Enter Names.");
		f.name.focus();
		return false;
	}
	if(f.city.value.search(/\S/)==-1)
	{
		alert("All Fields are Mandatory. Please Enter City.");
		f.city.focus();
		return false;
	}
	if(f.country.value=="#")
	{
		alert("All Fields are Mandatory. Please Select Country.");
		f.country.focus();
		return false;
	}
	if(f.email.value.search(/\S/)==-1)
	{
		alert("All Fields are Mandatory. Please Enter Email.");
		f.email.focus();
		return false;
	}
	if((/^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z.]{2,5}$/).exec(f.email.value)==null)
	{
		alert("Enter Proper Email");
		f.email.select();
		return false;
	}
	if(f.phone.value.search(/\S/)==-1)
	{
		alert( "Please, Provide The Phone Number." );
		f.phone.focus();
		return false;
	}
	if(f.know_us1.value=="#")
	{
		alert("Please Select reference");
		f.know_us1.focus();
		return false;
	}
	if(f.know_us1.value=="other")
	{
		if(f.know_us2.value.search(/\S/)==-1)
		{
		alert("Please Enter reference");
		f.know_us2.focus();
		return false;
		}
	}
	if(f.comments.value.search(/\S/)==-1)
	{
		alert("All Fields are Mandatory. Please Enter Comments.");
		f.comments.focus();
		return false;
	}
}
function change()
{
	if(document.form1.know_us1.value == "other")
	{
	document.getElementById('know_us1').style.display="none";
	document.getElementById('know_us2').style.display="";
	}
}
function change1()
{
	if(document.form1.subject.value == "other")
	{
	document.getElementById('subject').style.display="none";
	document.getElementById('subject2').style.display="";
	}
}