playing around with:

dabblet.css

/* playing around with:
   http://stackoverflow.com/questions/14761316/advanced-css-rollover-parent-container-image-swap 
*/

body{
  font: normal normal 16px/18px "Lucida Grade", Calibri;
} 

ul, li{
  margin: 0;
  padding: 0;
  list-style-type: none;
}

ul{
  overflow: hidden;   
}  

li{
  float: left;  
  position: relative;
  z-index: 4;
  height: 40px;    
  background: #eee;
  background: linear-gradient(0deg, #ddd, #eee); 
}

li:hover{
  background: #999;  
  background: linear-gradient(0deg, #666, #999);
}

li:first-child{
  border-radius: 4px 0 0 4px;
  z-index: 10;
}

/* each list item overlaps the next */
li:nth-child(2){ z-index: 9; }
li:nth-child(3){ z-index: 8; }
li:nth-child(4){ z-index: 7; }
li:nth-child(5){ z-index: 6; }
li:nth-child(6){ z-index: 5; }
li:nth-child(7){ z-index: 4; }
li:nth-child(8){ z-index: 3; }
li:nth-child(9){ z-index: 2; }

li:last-child{
  background: #f6f6f6;
  background: linear-gradient(0deg, #eee, #f6f6f6);        
}

a::after{
  content: '';
  position: absolute;
  z-index: 5;
  top: 2px;
  right: -15px;
  width: 30px;
  height: 40px;
  background: #eee;    
  background: linear-gradient(-45deg, #ddd, #eee);      
  transform: rotate(45deg) skew(14deg, 14deg);
  border: 5px solid #fff;
  border-bottom: 0;
  border-left: 0;
}

li:hover a::after{
  background: #999; 
  background: linear-gradient(-45deg, #666, #999);
}

a{
  display: block;
  padding: 10px 20px 12px 40px;     
  color: #666;
  text-shadow: 0 1px 0 #eee;
  text-decoration: none;  
  text-transform: uppercase;
}

li:first-child a{
  padding-left: 20px;
}

li:hover a{
  color: #fff;
  text-shadow: 0 -1px #000;
}  

li:last-child a,
li:hover:last-child a{
  color: #aaa;
  text-shadow: 0 1px 0 #fcfcfc;
}  

li:last-child a::after{
  background: #f6f6f6;            
  background: linear-gradient(-45deg, #eee, #f6f6f6);            
}

dabblet.html

<ul>
  <li> <a href="#">Home</a>  </li>
  <li> <a href="#">Inner page</a>  </li>
  <li> <a href="#">Really loooooooong inner page</a>  </li>
  <li> <a href="#">Fourth</a>  </li>
  <li> <a>Last</a>  </li>    
</ul>  

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"all"}