if (document.images)
{
nav_1_up = new Image;
nav_1_over = new Image;
nav_1_up.src ="images/nav_1_up.gif";
nav_1_over.src ="images/nav_1_over.gif";

nav_2_up = new Image;
nav_2_over = new Image;
nav_2_up.src ="images/nav_2_up.gif";
nav_2_over.src ="images/nav_2_over.gif";

nav_3_up = new Image;
nav_3_over = new Image;
nav_3_up.src ="images/nav_3_up.gif";
nav_3_over.src ="images/nav_3_over.gif";

nav_4_up = new Image;
nav_4_over = new Image;
nav_4_up.src ="images/nav_4_up.gif";
nav_4_over.src ="images/nav_4_over.gif";

nav_5_up = new Image;
nav_5_over = new Image;
nav_5_up.src ="images/nav_5_up.gif";
nav_5_over.src ="images/nav_5_over.gif";

ang_up = new Image;
ang_over = new Image;
ang_up.src ="images/ang_up.gif";
ang_over.src ="images/ang_over.gif";

char_up = new Image;
char_over = new Image;
char_up.src ="images/char_up.gif";
char_over.src ="images/char_over.gif";
}
else

{ // for non  javascript browsers

nav_1_up = "";
nav_2_up = "";
nav_3_up = "";
nav_4_up = "";
ang_up = "";
char_up = "";

nav_1_over = "";
nav_2_over = "";
nav_3_over = "";
nav_4_over = "";
ang_over = "";
char_over = "";


document.one = "";
document.two = "";
document.three = "";
document.four = "";
document.five = "";
document.six = "";

}

// form validation script

function validate() {
	if(document.myform.name.value=="") {
	  alert("Please enter your name");
	  document.myform.name.focus();
	return false;
}
else if (document.myform.subject.value==""){
		alert("Please enter the subject of your enquiry");
		document.myform.subject.focus();
	return false;
}
else if ((document.myform.email.value.indexOf("@") == -1 ) ||
		 (document.myform.email.value.indexOf(".") == -1 )) {
		 alert("Please enter a valid email address");
		 document.myform.email.focus();
	return false;
}
else if (document.myform.comment.value=="") {
		alert("Please enter your comments. Your feedback is important to us.");
		document.myform.comment.focus();
	return false;
}
else return true;
}
// JavaScript Document