Conditional comments using to recognise version of your IE browser

Conditional comments only work in Explorer on Windows, and are thus excellently suited to give special instructions meant only for Explorer on Windows. They are supported from Explorer 5 onwards, and it is even possible to distinguish between 5.0, 5.5 and 6.0, ie7, ie8

The syntax I use is:

<!–[if IE]>
According to the conditional comment this is Internet Explorer<br />
<![endif]–>
<!–[if IE 5]>
According to the conditional comment this is Internet Explorer 5<br />
<![endif]–>
<!–[if IE 5.0]>
According to the conditional comment this is Internet Explorer 5.0<br />
<![endif]–>
<!–[if IE 5.5]>
According to the conditional comment this is Internet Explorer 5.5<br />
<![endif]–>
<!–[if IE 6]>
According to the conditional comment this is Internet Explorer 6<br />
<![endif]–>
<!–[if IE 7]>
According to the conditional comment this is Internet Explorer 7<br />
<![endif]–>
<!–[if gte IE 5]>
According to the conditional comment this is Internet Explorer 5 and up<br />
<![endif]–>
<!–[if lt IE 6]>
According to the conditional comment this is Internet Explorer lower than 6<br />
<![endif]–>
<!–[if lte IE 5.5]>
According to the conditional comment this is Internet Explorer lower or equal to 5.5<br />
<![endif]–>
<!–[if gt IE 6]>
According to the conditional comment this is Internet Explorer greater than 6<br />
<![endif]–>

Note the special syntax:

gt: greater than
lte: less than or equal to


Example 
In HTML code<!--[if IE 7]>
<style>
	.ie7Div1{ width:700px; }
	.ie7Div2{ width:450px;}
</style>
<![endif]-->
<!--[if IE 8]>
<style >
	.ie8Div1{ width:600px; }
	.ie8Div2{ width:600px;}
</style>
<![endif]-->

If your browser you're using is IE7 it will choose  ie7Div1 style 
and it has no style in ie8Div1

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