Cross Browser CSS Selector Support Detection

supports.js

function supports(prop) {
    var div = document.createElement('div'),
        vendors = ['Khtml','Ms','O','Moz','Webkit'],
        len = vendors.length;
    if (prop in div.style) return true;
    var prop = prop.replace(/^[a-z]/, function(val) {
        return val.toUpperCase();
    });
    while(len--) {  
       if ( vendors[len] + prop in div.style ) return true;
    }
    return false;
}

// Usage (JS styles are camelCase):
// document.getElementsByTagName('html')[0].className += supports('transitionProperty')? ' transitions' : ' no-transitions';