Background Color for the TR based on Task Status in SharePoint List

<style type="text/css">
.InProgress
{
    background-color:orange;
    font-size:x-small;
    font-weight:bold;
    color:white;
}
.NotStarted
{
    background-color:silver;
    font-size:x-small;
    font-weight:bold;
    color:white;

}
.Completed
{
    background-color:Teal;
    font-size:x-small;
    font-weight:bold;
    color:white;

}
.Deferred
{
    background-color:Aqua;
    font-size:x-small;
    font-weight:bold;
    color:white;

}
.Waiting
{
    background-color:pink;
    font-size:x-small;
    font-weight:bold;
    color:white;

}




</style>
<script language="javascript" type="text/javascript">
 function getImagestoGrid()
{
                var rows = document.getElementsByTagName('td');
                 var numRows = rows.length;
                 for (var i = 0; i < numRows; i++)
                {
                                if(rows[i].innerHTML=="In Progress")
                                {
                                               //rows[i].innerHTML="<Img src='/Shared Documents/Research and Development/Images/In Progress.jpg' width='25' height='25' Title='In Progress'>";
                                               rows[i].parentElement.className='InProgress';
       
                                }
                              
                                if(rows[i].innerHTML=="Completed")
                                {
                                                //rows[i].innerHTML="<Img src='/Shared Documents/Research and Development/Images/Completed.jpg' width='25' height='25' Title='Completed'>";
                                                rows[i].parentElement.className='Completed';
                                }
                              
                                if(rows[i].innerHTML=="Deferred")
                                {
                                                //rows[i].innerHTML="<Img src='/Shared Documents/Research and Development/Images/Deferred.jpg' width='25' height='25' Title='Deferred'>";                
                                                rows[i].parentElement.className='Deferred';
                                }
                               
                                if(rows[i].innerHTML=="Not Started")
                                {
                                                //rows[i].innerHTML="<Img src='/Shared Documents/Research and Development/Images/Not Started.jpg' width='25' height='25' Title='Not Started'>";                
                                                rows[i].parentElement.className='NotStarted';
                                }
                               
                                  if(rows[i].innerHTML=="Waiting on someone else")
                                {
                                                //rows[i].innerHTML="<Img src='/Shared Documents/Research and Development/Images/Waiting on someone else.jpg' width='25' height='25' Title='Waiting on someone else'>";                
                                                rows[i].parentElement.className='Waiting';
                                                rows[i].noWrap='noWrap';
                                }

                                //

                }               

}
_spBodyOnLoadFunctionNames.push("getImagestoGrid");</script>