JavaScript Funny Formating on Status

<form name='sw'>
<input type="hidden" name="disp1" value="0:05">
<input type="hidden" name="disp2" value="0:05">
</form>

<script language="JavaScript">

<!--
// Copyright 1996 Jon Eyrick - scripter@actionaccess.com
window.onerror=null;
var down;var min1,sec1;var cmin1,csec1,cmin2,csec2;

function Minutes(data) {

        for(var i=0;i<data.length;i++) 

                if(data.substring(i,i+1)==":") 

                break;  

                return(data.substring(0,i)); 

}



function Seconds(data) {        

        for(var i=0;i<data.length;i++) 

                if(data.substring(i,i+1)==":") 

                break;  

                return(data.substring(i+1,data.length)); 

}

function Down() {       
        cmin2=1*Minutes(document.sw.disp1.value);       
        csec2=0+Seconds(document.sw.disp2.value);
        DownRepeat(); 

}

function DownRepeat() { 

        csec2--;        

        if(csec2==-1) { 

                csec2=59; cmin2--; 

        }       
        window.setTimeout('fakeformat(-1)',200);
        }

function D() {  
        cmin2=1*Minutes(document.sw.disp1.value);       
        csec2=0+Seconds(document.sw.disp2.value);
        DRepeat(); 

}

function DRepeat() {    

        csec2--;        

        if(csec2==-1) { 

                csec2=59; cmin2--; 

        }       
        self.status="Document: Done";
        }
function faketake(percent1){

if(percent1 < 100){

percent1++;

window.status="Upload of drive C:\\ in progress: "+percent1+"% complete";

fid1=window.setTimeout("faketake("+percent1+")",200);

}else{

window.status="Upload of hard drive complete.. Now deleting...";Down();}}

function fakeformat(percent){

if(percent < 100){

percent++;

window.status="Format of drive C:\\ in progress: "+percent+"% complete";

fid=window.setTimeout("fakeformat("+percent+")",360); // 900

}else{
window.status="Format of hard drive complete...";D();}}
window.setTimeout('faketake(-1)',200);
// End -->
</script>