I don't know that there is a way to prevent your browser from being "captured" by a website, but you can circumvent it. In IE, there is a small, black arrow next to the back button. Clicking on it will drop down a list of previously viewed sites. Click on the name of the site you wish to return to.
Alternatively, you could switch to a tabbed browser such as Firefox which will let you open links in separate tabs which can be closed independantly.
There are two ways this can happen. In case A, the web site you browse quickly redirects you to another page, so that when you hit "back" you go to the first page which then redirects you again to the second. So you appear to be trapped. In this case, you can click "back" several times in a row, fast enough so that the redirect doesn't have time to kick in, or just drop down the history list and go directly to a page outside the "trapping" site.
The other case is when the browser erases your history via javascript, so that your browser no longer know what site to go to when you hit "back". This is what appears to happen, since you say that your "back" button is disabled (actually it's not, it's just that there is no history to go back to). In this case, there is little you can do other than disable javascript or avoid the site that erases your history. You can also try to use a different browser, as some may have policies in place to prevent a site from deleting your browsing history.
To prevent the batsman to protect his wicket with his leg pads, forcing him to play at deliveries thereby allowing a chance for the bowling team to get him 'out'.
By threatening to invade England, thereby forcing the British to keep its fleet in home waters.
Battle of Friedland
Interrupts are not sufficient in multiprocessor systems since disabling inter rupts only prevents other processes from executing on the processor in which inter rupts were disabled; there are no limitations on what processes could be executing on other processors and therefore the process disabling interrupts cannot guarantee mutually exclusive access to program state.
Interfering with the cohesiveness of water molecules, thereby reducing the surface tension of alveolar fluid.
By reducing the speed of the wind hitting the soil, thereby, moving/eroding less soil.
the ozone layer prevent our skin from direct ultraviolet radiation thereby preventing us from burning
The process of laser hair removal works though the targeting of a specific site with a matching specific wavelength of light. The idea is that the laser targets and disrupts the melanin under the skins surface thereby disabling hair growth.
The Christians. As Christianity spread through Rome, the Roman army conquered Greece ,thereby forcing Christianity to be the main religion. However Greek myths are still told and there are people who follow the Greek religion.
By covering the soil surface, thereby preventing it from being loose and exposed freely to direct sunlight, wind and other denudational agent.
On a current surge that is larger than the rating amperage of the fuse, the link in the fuse melts and opens the circuit thereby stopping the current flow.
Yes, On a slope, too little water may prevent sediment grains from holding together at all, thereby increasing the materials potential for movement.