function disable_fields() { 
 var frm = document.forms[0] ; 
frm.TITLE1.disabled = true; 
frm.TITLE2.disabled = true; 
frm.TITLE3.disabled = true; 
frm.TITLE4.disabled = true; 
frm.TITLE5.disabled = true; 
frm.URL1.disabled = true; 
frm.URL2.disabled = true; 
frm.URL3.disabled = true; 
frm.URL4.disabled = true; 
frm.URL5.disabled = true; 
 } 
function enable_fields() { 
 var frm = document.forms[0] ; 
frm.TITLE1.disabled = false; 
frm.TITLE2.disabled = false; 
frm.TITLE3.disabled = false; 
frm.TITLE4.disabled = false; 
frm.TITLE5.disabled = false; 
frm.URL1.disabled = false; 
frm.URL2.disabled = false; 
frm.URL3.disabled = false; 
frm.URL4.disabled = false; 
frm.URL5.disabled = false; 
 }  
function enable_regular() { 
 var frm = document.forms[0] ; 
frm.TITLE1.disabled = false; 
frm.TITLE2.disabled = false; 
frm.TITLE3.disabled = false; 
frm.TITLE4.disabled = true; 
frm.TITLE5.disabled = true; 
frm.URL1.disabled = false; 
frm.URL2.disabled = false; 
frm.URL3.disabled = false; 
frm.URL4.disabled = true; 
frm.URL5.disabled = true; 
 }   

function setVisibility(id, visibility) {
document.getElementById(id).style.display = visibility;
}
function setValue(id, value) {
document.getElementById(id).value = value;
}
function resetValues() {
setValue('TITLE1', '');
setValue('URL1', '');
setValue('TITLE2', '');
setValue('URL2', '');
setValue('TITLE3', '');
setValue('URL3', '');
setValue('TITLE4', '');
setValue('URL4', '');
setValue('TITLE5', '');
setValue('URL5', '');
}
function featured(){
setVisibility('field1_title', '');
setVisibility('field1_url', '');
setVisibility('field2_title', '');
setVisibility('field2_url', '');
setVisibility('field3_title', '');
setVisibility('field3_url', '');
setVisibility('field4_title', '');
setVisibility('field4_url', '');
setVisibility('field5_title', '');
setVisibility('field5_url', '');
resetValues();
enable_fields()
}
function regular(){
setVisibility('field1_title', '');
setVisibility('field1_url', '');
setVisibility('field2_title', '');
setVisibility('field2_url', '');
setVisibility('field3_title', '');
setVisibility('field3_url', '');
setVisibility('field4_title', 'none');
setVisibility('field4_url', 'none');
setVisibility('field5_title', 'none');
setVisibility('field5_url', 'none');
resetValues();
enable_regular();
}
function no_deeplinks(){
setVisibility('field1_title', 'none');
setVisibility('field1_url', 'none');
setVisibility('field2_title', 'none');
setVisibility('field2_url', 'none');
setVisibility('field3_title', 'none');
setVisibility('field3_url', 'none');
setVisibility('field4_title', 'none');
setVisibility('field4_url', 'none');
setVisibility('field5_title', 'none');
setVisibility('field5_url', 'none');
resetValues();
disable_fields();
}