function nav_bar(pane){
	if(pane==1){
		document.getElementById("pane1").style.display = "block";
		document.getElementById("pane2").style.display = "none";
		document.getElementById("pane3").style.display = "none";
	}
	else if(pane==2){
		document.getElementById("pane1").style.display = "none";
		document.getElementById("pane2").style.display = "block";
		document.getElementById("pane3").style.display = "none";
	}
	else{
		document.getElementById("pane1").style.display = "none";
		document.getElementById("pane2").style.display = "none";
		document.getElementById("pane3").style.display = "block";
	}
}

function validate(form_name){
	
	var allowedzipchars="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789- ";
	frm = document.forms[form_name];
	
	switch(form_name){
		case "major_search":
			var zip = frm.zipcode.value;
			zip = zip.replace(/^\s*/,"");
			zip = zip.replace(/\s*$/,"");
			
			if(zip == ""){
				alert("Please enter valid ZIP or postal code.");
				frm.zipcode.focus();
				return false;
			}
			if(zip.length < 5 || zip.length > 7){
				alert("Please enter valid ZIP or postal code.");
				frm.zipcode.focus();
				return false;
			}
			for(i=0; i<zip.length; i++){
				charone = zip.charAt(i);
				if(allowedzipchars.indexOf(charone) =="-1"){
					alert("Please enter valid ZIP or postal code.")
					frm.zipcode.focus();
					return false;
				}
			}
			break;
		case "name_search":
			var name_search = frm.namesearch.value;
				name_search = name_search.replace(/^\s*/,"");
				name_search = name_search.replace(/\s*$/,"");
			if(name_search == ""){
				alert("Please enter all or part of the School Name.");
				frm.namesearch.focus();
				return false;
			}
			if(name_search.length < 4){
				alert("Your Search must be more than 3 chars.");
				frm.namesearch.focus()
				return false;
			}
			break;
		default : return false;
	}
}