function cleanUp() {
    document.getElementById('person').checked = true;
    document.getElementById('region').options[0].selected = true;
    document.getElementById('degree').options[0].selected = true;
    document.getElementById('prodegree').options[0].selected = true;
    document.getElementById('foreign_lang').options[0].selected = true;
    document.getElementById('search_for').value = "";
    updateSpec(0, '');
}

function initValues(type, sp, sc, pr, prs, pd) {
    if (type == 'office') {
    	document.getElementById('office').checked = true;
	    updateSpec(1, sp);
    } else {
    	document.getElementById('person').checked = true;
	    updateSpec(0, sp);
    }
    spec = document.getElementById('spec').value;
    updateScope(spec, sc);
    updatePref(spec, pr);
	set_pref_sub(pr, prs);
    updateProDegree(spec, pd);
}

function updateSpec(type, sp) {
    spec = document.getElementById('spec');
    spec.options.length = 0;
    x = 0;
    specValue = 0;
    for (var i in speciality) {
        if ((speciality[i][2] == 1) || ((speciality[i][2] == 0) && (type == 0))) {
            spec.options[x++] = new Option(speciality[i][1], speciality[i][0], false, false);
            if (sp == speciality[i][0]) {
                spec.options[x - 1].selected = true;
                specValue = speciality[i][0];
            }
        }
    }
    if (sp == "") {
        spec.options[0].selected = true;
        specValue = spec.options[0].value;
    }
    if (type == 1) {
    	document.getElementById('degree').disabled = true;
    	document.getElementById('prodegree').disabled = true;
    } else {
    	document.getElementById('degree').disabled = false;
    	document.getElementById('prodegree').disabled = false;
    }
    updatePrefsAndScope(specValue);
}

function updatePrefsAndScope(spec) {
    updatePref(spec, '');
    updateScope(spec, '');
    updateProDegree(spec, '');
}

function updatePref(spec, pr) {
    pref = document.getElementById('pref');
    pref.options.length = 1;
    x = 1;
    for (var i in parentPrefs) {
        if (parentPrefs[i][2] == spec) {
            pref.options[x++] = new Option(parentPrefs[i][1], parentPrefs[i][0], false, false);
            a = parentPrefs[i][0];
	        if (pr == parentPrefs[i][0]) {
    	        pref.options[x - 1].selected = true;
        	}
			
            /*for (var j in c[a]) {
                if (c[a][j][2] == spec) {
                    pref.options[x++] = new Option('-- ' + c[a][j][1], c[a][j][0], false, false);
		    	    if (pr == c[a][j][0]) {
    		    	    pref.options[x - 1].selected = true;
        			}
                }
            }*/
        }
    }
	
    for (var k in e) {
    	if (e[k][0] == spec) {
    		spec2 = e[k][1];
		    for (var i in parentPrefs) {
		        if (parentPrefs[i][2] == spec2) {
		            pref.options[x++] = new Option(parentPrefs[i][1], parentPrefs[i][0], false, false);
		            a = parentPrefs[i][0];
			        if (pr == parentPrefs[i][0]) {
		    	        pref.options[x - 1].selected = true;
		        	}
		            for (var j in c[a]) {
		                if (c[a][j][2] == spec2) {
		                    pref.options[x++] = new Option('-- ' + c[a][j][1], c[a][j][0], false, false);
				    	    if (pr == c[a][j][0]) {
		    		    	    pref.options[x - 1].selected = true;
		        			}
		                }
		            }
		        }
		    }
    	}
    }
//    for (var i in pref.options) {
//        if (pr == pref.options[i].value) {
//            pref.options[i].selected = true;
//        }
//    }
}

function updateScope(spec, sc) {
    scope_help = document.getElementById('scope');
    scope_help.options.length = 1;
    x = 1;
    for (var i in scopeHelp) {
        if (scopeHelp[i][2] == spec) {
            scope_help.options[x++] = new Option(scopeHelp[i][1], scopeHelp[i][0], false, false);
            if (sc == scopeHelp[i][0]) {
                scope_help.options[x - 1].selected = true;
            }
        }
    }
}

function updateProDegree(spec, sc) {
    pro_degree = document.getElementById('prodegree');
    pro_degree.options.length = 1;
    x = 1;
    for (var i in proDegree) {
        if (proDegree[i][2] == spec) {
            pro_degree.options[x++] = new Option(proDegree[i][1], proDegree[i][0], false, false);
            if (sc == proDegree[i][0]) {
                pro_degree.options[x - 1].selected = true;
            }
        }
    }
}

function set_pref_sub(value, pr){
	pref = document.getElementById('pref_sub');
	pref.options.length = 1;
    x = 1;
	$('#pref_sub').attr('disabled', 'disabled');
	for (var j in c[value]) {
		$('#pref_sub').removeAttr('disabled');
        pref.options[x++] = new Option(c[value][j][1], c[value][j][0], false, false);
    	    if (pr == c[value][j][0]) {
	    	    pref.options[x - 1].selected = true;
			}
    }	
}