[ubuntu] How to go to Desktop directly from multiple windows opened?

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http://ubuntuforums.org – Recently I upgraded to 12.04 from 10.04.. In 10.04 there was this icon on bottom right hand side by which I could switch to Desktop directly when I have opened more than 4-5 windows, by clicking on that icon..... But when I have upgraded to 12.04 there is no such icon present...now I have to minimize or close every application that I have opened...... Moreover application bar has gone up with tabs in like 'File', 'Edit', 'Go', 'Help' ........I dont want them too.....,,earlier it was too good in 10.04 when every application opened featured in main bar present on floor of Desktop..... Somebo (Hardware)