how to solve the jquery conflict because of adding the two diiferent files

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Javascript

jQuery

C#3.5

Hi,



Im My project i had the script file name as "\js\jquery-1.7.1.min.js","js/jquery-1.8.0.min.js","js1/jquery-ui-1.8.23.custom.min.js","\js\jquery.toolbar.min.js" like this i want to include all the script files in one web page but when i include all the scripts the "js\jquery.toolbar.min.js" this script is not running how can i solve this to run all this script by including on same page..can i change the name of these files am new to jquery so please suggest me how can i solve this