BLOGSPOT: How to put time and date script

I am sorry , I have no knowledge about this , just copy the below code to paste in your blog .

This is an example to display in your blog.

Please Select on Highlight All and then Click on Copy to Clipboard

var tags_before_clock = "It is now "
var tags_middle_clock = "on"
var tags_after_clock = ""

if(navigator.appName == "Netscape") {
document.write('<layer id="clock"></layer> ');
}

if (navigator.appVersion.indexOf("MSIE") != -1){
document.write('');
}

DaysofWeek = new Array()
  DaysofWeek[0]="Sunday"
  DaysofWeek[1]="Monday"
  DaysofWeek[2]="Tuesday"
  DaysofWeek[3]="Wednesday"
  DaysofWeek[4]="Thursday"
  DaysofWeek[5]="Friday"
  DaysofWeek[6]="Saturday"

Months = new Array()
  Months[0]="January"
  Months[1]="February"
  Months[2]="March"
  Months[3]="April"
  Months[4]="May"
  Months[5]="June"
  Months[6]="July"
  Months[7]="August"
  Months[8]="September"
  Months[9]="October"
  Months[10]="November"
  Months[11]="December"

function upclock(){
var dte = new Date();
var hrs = dte.getHours();
var min = dte.getMinutes();
var sec = dte.getSeconds();
var day = DaysofWeek[dte.getDay()]
var date = dte.getDate()
var month = Months[dte.getMonth()]
var year = dte.getFullYear()

var col = ":";
var spc = " ";
var com = ",";
var apm;

if (date == 1 || date == 21 || date == 31)
 {ender = "st"}
else
if (date == 2 || date == 22)
 {ender = "nd"}
else
if (date == 3 || date == 23)
 {ender = "rd"}

else
 {ender = "th"}

if (12 < hrs) {
apm="pm";
hrs-=12;
}

else {
apm="am";
}

if (hrs == 0) hrs=12;
if (hrs<=9) hrs="0"+hrs;
if (min<=9) min="0"+min;
if (sec<=9) sec="0"+sec;

if(navigator.appName == "Netscape") {
document.clock.document.write(tags_before_clock+hrs+col+min+col+sec+apm+spc+tags_middle_clock+
spc+day+com+spc+date+ender+spc+month+com+spc+year+
tags_after_clock);
document.clock.document.close();
}

if (navigator.appVersion.indexOf("MSIE") != -1){
clock.innerHTML = tags_before_clock+hrs+col+min+col+sec+apm+spc+tags_middle_clock+
spc+day+com+spc+date+ender+spc+month+com+spc+year+
tags_after_clock;
}
}

setInterval("upclock()",1000);
//-->
</script>