CSS背景色渐变全兼容（转载）

.gradient{
    width:300px;
    height:150px;
    filter:alpha(opacity=100 finishopacity=50 style=1 startx=0,starty=0,finishx=0,finishy=150) progid:DXImageTransform.Microsoft.gradient(startcolorstr=red,endcolorstr=blue,gradientType=0);	
    -ms-filter:alpha(opacity=100 finishopacity=50 style=1 startx=0,starty=0,finishx=0,finishy=150) progid:DXImageTransform.Microsoft.gradient(startcolorstr=red,endcolorstr=blue,gradientType=0);	
	background:red; /* 一些不支持背景渐变的浏览器 */  
    background:-moz-linear-gradient(top, red, rgba(0, 0, 255, 0.5));  
    background:-webkit-gradient(linear, 0 0, 0 bottom, from(#ff0000), to(rgba(0, 0, 255, 0.5)));  
}

HTML代码：

<div class="gradient"></div>

转载于 
http://www.zhangxinxu.com/study/201004/css-gradient-cross-brower.html