I'm trying to create hidden iframes in my page dynamically to load 3 other pages so that i can grab all the HTML and combine them into 1 in a new window.

However i'm stuck at this. tHe frames are created fine. But whenever the javascript runs to the part of

 function openNewWindow()
 {
     var printWindow = window.open("","");
     printWindow.document.open();
     printWindow.document.write(HTMLfromFrames);
     printWindow.document.close(); 
 }

i get this error: TypeError: Result of expression 'printWindow' [undefined] is not an object.

but if i generate a button to call this function seperately, it works fine. however i need it to run all in one click event

Anybody has any idea what's wrong? Thanks!