help with Javascript

Can anyone tell me what this line of code does:

var src = window.event != window.undefined ? window.event.srcElement : evt.target;
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HLRosenbergerAsked:
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micropc1Commented:
This line is assigning the event source element to the src variable. It it formatted this way for browser compatability. window.event.srcElement is only valid with Internet Explorer. For other browsers it will not be defined and evt.target is used.

It uses the javascript ternary operator, which equates to the following if block..

if (window.event != window.undefined) {   //IE
   var src = window.event.srcElement;
} else {  //Other Browser
   var src = evt.target;
}
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Albert Van HalenAnalyst developerCommented:
micropc1 is right

Since the variable evt is available the statement can be reduced to this
var src = evt.srcElement || evt.target;

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HLRosenbergerAuthor Commented:
Thanks so much..
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