Javascript change HTML button value not working in iE7

I have to change the value of a button i.e. the button text.

I have to be able to click on a button on a row in the table and then fill  in the form and then clcik again and its disabled like before.

Problem is now that you click the edit button and it changes to save - you cannot change it back though. Cannot use two buttons as this makes more JS code (much more).

This is the HTML for it:

<?
                  while($company_contacts_row = mysql_fetch_array($company_contacts_query))
                  {      
                        echo "<tr>";      
                        echo "<td>";      
                        echo "<input type='text' name='type".$company_contacts_row['contact_id']."' id='type".$company_contacts_row['contact_id']."' value='".$company_contacts_row['type']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";  
                        echo "</td>";
                        
                        echo "<td>";
                        echo "<input type='text' name='name".$company_contacts_row['contact_id']."' id='name".$company_contacts_row['contact_id']."' value='".$company_contacts_row['title']." ".$company_contacts_row['fname']." ".$company_contacts_row['lname']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";  
                        echo "</td>";
                        
                        echo "<td>";
                        echo "<input type='text' name='mobile".$company_contacts_row['contact_id']."' id='mobile".$company_contacts_row['contact_id']."' value='".$company_contacts_row['mobile']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";  
                        echo "</td>";
                                                
                        echo "<td>";
                        echo "<input type='text' name='main_contact".$company_contacts_row['contact_id']."' id='main_contact".$company_contacts_row['contact_id']."' value='".$company_contacts_row['main_contact']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";  
                        echo "</td>";
      
                        echo "<td>";
                        echo "<input type='text' name='email".$company_contacts_row['contact_id']."' id='email".$company_contacts_row['contact_id']."' value='".$company_contacts_row['email']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";                          
                        echo "</td>";
                        
                        echo "<td>";
                        echo "<input type='text' name='responsible_for".$company_contacts_row['contact_id']."' id='responsible_for".$company_contacts_row['contact_id']."' value='".$company_contacts_row['responsible_for']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";  
                        echo "</td>";

                        echo "<td>";
                        echo "<input type='text' name='".$company_contacts_row['contact_id']."' id='".$company_contacts_row['contact_id']."' value='".$company_contacts_row['main_telephone']."' disabled style='background-color:#97baef;width:60px;border:1px solid #97baef;' onchange='makeLocked(this.id)'>";                          
                        echo "</td>";
                        
                        echo "<td width='25px'>";
                        echo "<input type='button' value='Edit' id='edit_button".$company_contacts_row['contact_id']."' name='edit_button".$company_contacts_row['contact_id']."' onClick='makeEditable(".$company_contacts_row['contact_id'].");'>";
                        echo "</td>";
                        
                        echo "<td width='30px'>";
                        echo "<input type='button' value='Remove' onClick='remove_contact(".$company_contacts_row['contact_id'].",".$company_id.");'>";                        
                        echo "</td>";                              
                        echo "</tr>";
                  }      
            }                  
            ?>

Also the second problem is that the fields when disabled have the wrong text colour - black would be better, is there a hack or alternative method for this.

Would really appreciated some help with this one.
Thanks

function makeEditable(whichOne)
{	
	if(document.getElementById(whichOne).disabled == true)
	{
		document.getElementById('name' + whichOne).disabled = false;
		document.getElementById('name' + whichOne).style.backgroundColor = "#ffffff";
		document.getElementById('type' + whichOne).disabled = false;
		document.getElementById('type' + whichOne).style.backgroundColor = "#ffffff";
 
		var name = document.getElementById('name' + whichOne).value;
		var type = document.getElementById('type' + whichOne).value;
 
		document.getElementById('edit_button' + whichOne).value = "Save";
		
		get_ajax();
 
		xmlHttp = new XMLHttpRequest();
		xmlHttp.open("GET", "secured/save_contact_row.php?contact_id=" + whichOne + "&name=" + name  + "&type=" + type + "&mobile=" + mobile + "&responsible_for=" + responsible_for + "&main_contact=" + main_contact + "&email=" + email, false);
		xmlHttp.send(null);	
		xmlDoc = xmlHttp.responseText;
		
		if(xmlDoc == 'redirect_index_open_add')
		{
			//alert("test1");
			window.location = 'index.php?cmd=editContact&pg=3&company_id=' + company_id + '';
		}
	}
	else if(document.getElementById(whichOne).disabled == false)
	{
		document.getElementById('name' + whichOne).disabled = true;
		document.getElementById('name' + whichOne).style.backgroundColor = "#97baef";
		document.getElementById('type' + whichOne).disabled = true;
		document.getElementById('type' + whichOne).style.backgroundColor = "#97baef";
 
		document.getElementById('edit_button' + whichOne).childNodes[0].nodeValue = "Edit";
	}
}
 
function makeLocked(whichOne)
{
    document.getElementById('name' + whichOne).disabled = true;
    document.getElementById('name' + whichOne).style.backgroundColor = "#97baef";
	document.getElementById('type' + whichOne).disabled = true;
    document.getElementById('type' + whichOne).style.backgroundColor = "#97baef";
 
	document.getElementById('edit_button' + whichOne).childNodes[0].nodeValue = "Edit";
}

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