Смена прозрачности

[Павел]

Здравствуйте!

Прошу помощи

есть код

<style>
div.block {
 padding: 4px;
 background: #f00;
}
</style>
<script>
var Opacity =
{
 set: function(elem, op)
 {
 var prop = this.getProperty();
 if (!elem || !prop)
 return false;

 if (prop == 'filter')
 {
 op *= 100;
 var oAlpha = elem.filters['DXImageTransform.Microsoft.alpha'] || elem.filters.alpha;
 if (oAlpha)
 oAlpha.opacity = op;
 else
 elem.style.filter += 'progid:DXImageTransform.Microsoft.Alpha(opacity=' + op + ')';
 }
 else
 elem.style[prop] = op;
 }, 
 getProperty: function()
 {
 if (typeof document.body.style.opacity == 'string')
 return 'opacity';
 else if (typeof document.body.style.MozOpacity == 'string')
 return 'MozOpacity';
 else if (typeof document.body.style.KhtmlOpacity == 'string')
 return 'KhtmlOpacity';
 else if (document.body.filters && navigator.appVersion.match(/MSIE ([d.]+);/)[1]>=5.5)
 return 'filter';
 return '';
 }
};
</script>

<div class="block" onclick="Opacity.set(this, 0.3)">Text</div>

этот код не работает в IE6/IE7 и отлично работает в FF, Opera, Safari.

Не пойму что происходит..

[AKS]

filter Attribute | filter Property:

An object must have layout for the filter to render. A simple way to accomplish this is to give the element a specified height and/or width. However, there are several other properties that can give an element layout. For more information on these other properties, see the hasLayout property.

hasLayout Property:

display inline-block

height any value

float left or right

position absolute

width any value

writing-mode tb-rl

zoom any value

[Павел]

filter Attribute | filter Property:

An object must have layout for the filter to render. A simple way to accomplish this is to give the element a specified height and/or width. However, there are several other properties that can give an element layout. For more information on these other properties, see the hasLayout property.

hasLayout Property:

display inline-block

height any value

float left or right

position absolute

width any value

writing-mode tb-rl

zoom any value

Помогло!

Огромное спасибо!