In case this helps, here is a piece of the crash report :
Exception: EXC_BAD_ACCESS (0x0001)
Codes: KERN_PROTECTION_FAILURE (0x0002) at 0x0000004d
Thread 0 Crashed:
0 com.apple.WebCore 0x9586e83c DOM::operator==(DOM::DOMString const&, DOM::DOMString const&) + 28
1 <<00000000>> 0x00000000 0 + 0
2 com.apple.WebCore 0x95a0e15c DOM::NodeListImpl::itemById(DOM::DOMString const&) const + 256
3 com.apple.WebCore 0x95a83d54 DOM::NodeList::itemById(DOM::DOMString const&) const + 56
4 com.apple.WebCore 0x959475b8 KJS::DOMNodeList::tryGet(KJS::ExecState*, KJS::Identifier const&) const + 372
5 com.apple.WebCore 0x958b11e0 KJS::DOMObject::get(KJS::ExecState*, KJS::Identifier const&) const + 60
6 com.apple.JavaScriptCore 0x957869cc KJS::Reference::getValue(KJS::ExecState*) const + 584
7 com.apple.JavaScriptCore 0x957864e8 KJS::AccessorNode2::evaluate(KJS::ExecState*) + 60
8 com.apple.JavaScriptCore 0x95790ac4 KJS::IfNode::execute(KJS::ExecState*) + 136
9 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
10 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
11 com.apple.JavaScriptCore 0x95795214 KJS::ForNode::execute(KJS::ExecState*) + 592
12 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
13 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
14 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
15 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
16 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
17 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
18 com.apple.JavaScriptCore 0x95785e80 KJS::AssignExprNode::evaluate(KJS::ExecState*) + 40
19 com.apple.JavaScriptCore 0x95785d88 KJS::VarDeclNode::evaluate(KJS::ExecState*) + 100
20 com.apple.JavaScriptCore 0x95785cbc KJS::VarDeclListNode::evaluate(KJS::ExecState*) + 72
21 com.apple.JavaScriptCore 0x95785b78 KJS::VarStatementNode::execute(KJS::ExecState*) + 120
22 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
23 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
24 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
25 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
26 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
27 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
28 com.apple.JavaScriptCore 0x95793b48 KJS::ReturnNode::execute(KJS::ExecState*) + 156
29 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
30 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
31 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
32 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
33 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
34 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
35 com.apple.JavaScriptCore 0x957933bc KJS::ConditionalNode::evaluate(KJS::ExecState*) + 200
36 com.apple.JavaScriptCore 0x95793b48 KJS::ReturnNode::execute(KJS::ExecState*) + 156
37 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
38 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
39 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
40 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
41 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
42 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
43 com.apple.JavaScriptCore 0x9578aeac KJS::ExprStatementNode::execute(KJS::ExecState*) + 120
44 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
45 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
46 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
47 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
48 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
49 com.apple.JavaScriptCore 0x957a22d8 KJS::FunctionProtoFuncImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 2556
50 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
51 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
52 com.apple.JavaScriptCore 0x9578b808 KJS::EqualNode::evaluate(KJS::ExecState*) + 60
53 com.apple.JavaScriptCore 0x95790ac4 KJS::IfNode::execute(KJS::ExecState*) + 136
54 com.apple.JavaScriptCore 0x95795214 KJS::ForNode::execute(KJS::ExecState*) + 592
55 com.apple.JavaScriptCore 0x95790bf4 KJS::IfNode::execute(KJS::ExecState*) + 440
56 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
57 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
58 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
59 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
60 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
61 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
62 com.apple.JavaScriptCore 0x95793b48 KJS::ReturnNode::execute(KJS::ExecState*) + 156
63 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
64 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
65 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
66 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
67 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
68 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
69 com.apple.JavaScriptCore 0x9578aeac KJS::ExprStatementNode::execute(KJS::ExecState*) + 120
70 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
71 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
72 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
73 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
74 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
75 com.apple.JavaScriptCore 0x957a22d8 KJS::FunctionProtoFuncImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 2556
76 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
77 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
78 com.apple.JavaScriptCore 0x9578aeac KJS::ExprStatementNode::execute(KJS::ExecState*) + 120
79 com.apple.JavaScriptCore 0x95795214 KJS::ForNode::execute(KJS::ExecState*) + 592
80 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
81 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
82 com.apple.JavaScriptCore 0x95790bf4 KJS::IfNode::execute(KJS::ExecState*) + 440
83 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
84 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
85 com.apple.JavaScriptCore 0x95790bf4 KJS::IfNode::execute(KJS::ExecState*) + 440
86 com.apple.JavaScriptCore 0x9578585c KJS::SourceElementsNode::execute(KJS::ExecState*) + 208
87 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
88 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
89 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
90 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
91 com.apple.JavaScriptCore 0x957a22d8 KJS::FunctionProtoFuncImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 2556
92 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
93 com.apple.JavaScriptCore 0x957862a8 KJS::FunctionCallNode::evaluate(KJS::ExecState*) + 1040
94 com.apple.JavaScriptCore 0x9578b808 KJS::EqualNode::evaluate(KJS::ExecState*) + 60
95 com.apple.JavaScriptCore 0x95790ac4 KJS::IfNode::execute(KJS::ExecState*) + 136
96 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
97 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
98 com.apple.JavaScriptCore 0x95796ff8 KJS::ForInNode::execute(KJS::ExecState*) + 1572
99 com.apple.JavaScriptCore 0x957859ac KJS::SourceElementsNode::execute(KJS::ExecState*) + 544
100 com.apple.JavaScriptCore 0x9578571c KJS::BlockNode::execute(KJS::ExecState*) + 140
101 com.apple.JavaScriptCore 0x9579260c KJS::DeclaredFunctionImp::execute(KJS::ExecState*) + 44
102 com.apple.JavaScriptCore 0x95791e88 KJS::FunctionImp::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 408
103 com.apple.JavaScriptCore 0x95787988 KJS::Object::call(KJS::ExecState*, KJS::Object&, KJS::List const&) + 136
104 com.apple.WebCore 0x959cdf8c KJS::JSAbstractEventListener::handleEvent(DOM::Event&, bool) + 492
105 com.apple.WebCore 0x95a08c64 DOM::DocumentImpl::handleWindowEvent(DOM::EventImpl*, bool) + 212
106 com.apple.WebCore 0x959077a4 DOM::NodeImpl::dispatchWindowEvent(int, bool, bool) + 200
107 com.apple.WebCore 0x95a0789c DOM::DocumentImpl::implicitClose() + 392
108 com.apple.WebCore 0x958f9fac KHTMLPart::checkEmitLoadEvent() + 524
109 com.apple.WebCore 0x959b31dc KHTMLPart::checkCompleted() + 212
110 com.apple.WebCore 0x95897108 KWQSignal::call(khtml::DocLoader*, khtml::CachedObject*) const + 136
111 com.apple.WebCore 0x958a2198 khtml::Loader::slotFinished(KIO::Job*, NSData*) + 476
112 com.apple.WebCore 0x95a1ba88 KWQSignal::callWithData(KIO::Job*, NSData*) const + 136
113 com.apple.WebCore 0x958a1f5c -[KWQResourceLoader finishJobAndHandle:] + 80
114 com.apple.WebKit 0x9569f494 -[WebSubresourceClient didFinishLoading] + 72
115 com.apple.WebKit 0x9569e71c -[WebBaseResourceHandleDelegate connectionDidFinishLoading:] + 48
116 com.apple.Foundation 0x9299184c -[NSURLConnection(NSURLConnectionInternal) _sendDidFinishLoadingCallback] + 188
117 com.apple.Foundation 0x9298fab8 -[NSURLConnection(NSURLConnectionInternal) _sendCallbacks] + 556
118 com.apple.Foundation 0x9298f810 _sendCallbacks + 156
119 com.apple.CoreFoundation 0x907dd584 __CFRunLoopDoSources0 + 568
120 com.apple.CoreFoundation 0x907dc9fc __CFRunLoopRun + 452
121 com.apple.CoreFoundation 0x907dc47c CFRunLoopRunSpecific + 268
122 com.apple.HIToolbox 0x93205740 RunCurrentEventLoopInMode + 264
123 com.apple.HIToolbox 0x93204d4c ReceiveNextEventCommon + 244
124 com.apple.HIToolbox 0x93204c40 BlockUntilNextEventMatchingListInMode + 96
125 com.apple.AppKit 0x936e7ae4 _DPSNextEvent + 384
126 com.apple.AppKit 0x936e77a8 -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 116
127 com.apple.Safari 0x00006740 0x1000 + 22336
128 com.apple.AppKit 0x936e3cec -[NSApplication run] + 472
129 com.apple.AppKit 0x937d487c NSApplicationMain + 452
130 com.apple.Safari 0x0005c77c 0x1000 + 374652
131 com.apple.Safari 0x0005c624 0x1000 + 374308
In case this helps, here is a piece of the crash report :