В чем тут ошибка.

<script type="text/javascript">
var arr=document.getElementsByTagName("td")
var arr1=new Array ("",  "")
var arr2=new Array ("+Ekaterina+", "Нати", "")
var arr3=new Array ("Ulisa", "Раса", "",  "",  "", "", "")
var arr4=new Array ("", "", "")

var x=0
var j=0
for (x in arr)
{while (x<=(arr.length -1))
{for (j in arr1)
{while (j<=(arr1.length-1))
{if (arr[x].innerHTML.indexOf(arr1[j])!= -1)
{arr[x].innerHTML=arr[x].innerHTML.substring (0, arr[x].innerHTML.indexOf(arr1[j]))+"<font color='ваш цвет'>"+arr1[j]+"</font>"+arr[x].innerHTML.substr (arr[x].innerHTML.indexOf(arr1[j])+arr1[j].length)}
j=j+1}}
x=x+1}}

for (x in arr)
{while (x<=(arr.length -1))
{for (i in arr2)
{while (i<=(arr2.length -1))
{if (arr[x].innerHTML.indexOf(arr2[i])!= -1)
{arr[x].innerHTML=arr[x].innerHTML.substring (0, arr[x].innerHTML.indexOf(arr2[i]))+"<font color='#ff0033'>"+arr2[i]+"</font>"+arr[x].innerHTML.substr (arr[x].innerHTML.indexOf(arr2[i])+arr2[i].length)}
i=i+1}}
x=x+1}}

for (x in arr)
{while (x<=(arr.length -1))
{for (l in arr3)
{while (l<=(arr3.length-1))
{if (arr[x].innerHTML.indexOf(arr3[l])!= -1)
{arr[x].innerHTML=arr[x].innerHTML.substring (0, arr[x].innerHTML.indexOf(arr3[l]))+"<font color='#CC33CC'>"+arr3[l]+"</font>"+arr[x].innerHTML.substr (arr[x].innerHTML.indexOf(arr3[l])+arr3[l].length)}
l = l +1}}
x=x+1}}

for (x in arr)
{while (x<=(arr.length -1))
{for (k in arr4)
{while (k<=(arr4.length-1))
{if (arr[x].innerHTML.indexOf(arr4[k])!= -1)
{arr[x].innerHTML=arr[x].innerHTML.substring (0, arr[x].innerHTML.indexOf(arr4[k]))+"<font color='ваш цвет'>"+arr4[k]+"</font>"+arr[x].innerHTML.substr (arr[x].innerHTML.indexOf(arr4[k])+arr4[k].length)}
k = k +1}}
x=x+1}}

</script>

Цвета не меняется. Что делать?