css实现背景渐变效果

[css]代码库

.gradient {
	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:#FFF; /* 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)));
}