// JavaScript Document

if (document.images) {

		aOn = new Image
		aOn.src = "i/home_nav_high.gif"
		bOn = new Image
		bOn.src = "i/musicandsound_nav_high.gif"
		cOn = new Image
		cOn.src = "i/politics_nav_high.gif"
		dOn = new Image
		dOn.src = "i/copyright_nav_high.gif"
		eOn = new Image
		eOn.src = "i/thoughtsonlife_nav_high.gif"
		
		aOff = new Image
		aOff.src = "i/home_nav.gif"
		bOff = new Image
		bOff.src = "i/musicandsound_nav.gif"
		cOff = new Image
		cOff.src = "i/politics_nav.gif"
		dOff = new Image
		dOff.src = "i/copyright_nav.gif"
		eOff = new Image
		eOff.src = "i/thoughtsonlife_nav.gif"

}

function chgImg(imgField,newImg) {
	if (document.images) {
		document[imgField].src= eval(newImg + ".src")
	}
}

function navselect(dropdown) {
var URL = dropdown.options[dropdown.selectedIndex].value;
if(URL != "") {
document.location.href=URL;
}
}




function isFilled(elm) {
    if (elm.value == "") 
    return false;
    else return true;
}

function isEmail(elm) {
    if (elm.value.indexOf("@") + "" != "-1" &&
        elm.value.indexOf(".") + "" != "-1" &&
        elm.value != "") 
    return true;
    else return false;
}


function isReady(form){    
	if (isFilled(form.fullname) == false) { 
    	alert("Please enter your name.");
    	form.fullname.focus();
    	return false;
    }
	
	if (isFilled(form.subject) == false) { 
    	alert("Please enter a Subject.");
    	form.subject.focus();
    	return false;
    }
	
	if (isEmail(form.email) == false) { 
    	alert("Please enter a valid email address.");
    	form.email.focus();
    	return false;
    }
		
	if (isFilled(form.comments) == false) { 
    	alert("Please enter your comments.");
    	form.comments.focus();
    	return false;
    }
	
	return true;
}

function clear_val(elm, text){
	if (elm.value == text){
		elm.value = "";
	}
}

function enter_val(elm, text){
	if (elm.value == ""){
		elm.value = text;
	}
}