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var button_color = "background-color: rgb(255,245,217)"
var mylocation = ""
var hint1 = ""
var hint2 = ""
var solution = ""
var problem = ""
var chapter = ""
var chapter_index = ""
var index = ""
var thelength = ""
var ending = ""
var beginning = ""
var chapter_button_name = ""
var problem_number = ""
var type=""
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thelength = mylocation.length
i = mylocation.lastIndexOf("/")
mylocation = mylocation.substring(i+1,thelength)
i = mylocation.lastIndexOf(".")
thelength = mylocation.length
ending = mylocation.substring(i,thelength)
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chapter = problem.substring(1,3)
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index = "../../../../home.htm"
chapter = (problem.substring(1,2)=="0")?problem.substring(2,3):chapter
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