javascriptcssstyleFloat和cssFloat_javascript技巧

LTFunction.setFloatStyle=function(obj,style)
{
var sty=obj.style;
if('cssFloat' in sty){
obj.style.cssFloat=style;
}else if('styleFloat' in sty){
obj.style.styleFloat=style;
}else{
throw 'set float style:'+style+'error.';
}
}