Js to achieve page redirect several ways

The first:

 
<script language="javascript"type="text/javascript"> 
window.location.href="http://shanghepinpai.com"; 
</script> 

The second:

 
<script language="javascript"> 
alert(" return "); 
window.history.back(-1); 
</script> 

The third:

 
<script language="javascript"> 
window.navigate("http://shanghepinpai.com"); 
</script> 

Fourth:

 
<script language="JavaScript"> 
self.location='http://shanghepinpai.com'; 
</script> 

Fifth:

 
<script language="javascript"> 
alert(" Illegal access! "); 
top.location='http://shanghepinpai.com'; 
</script>