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Issue in LookupField control when the number of items exceeds 20

Posted By:      Posted Date: October 11, 2010    Points: 0   Category :SharePoint

I have one strange issue in using LookUpField control in my publishing page layout. The issue comes when the lookup list grows beyond 20 items, the behaviuor of lookup is changed. If the number of items is more 20 then the control generate a TextBox and an Image and we receive the following error:

Microsoft JScript runtime error: Object required The problem is raised in the Core.js file in the AbsLeft method.

function AbsLeft(obj) {
var x=obj.offsetLeft;
var parent=obj.offsetParent;
while (parent.tagName !="BODY")

 x+=parent.offsetLeft; return x;


I have debug the JS and come to know that BODY tag never comes in while loops so it gives error over there.
If I set fixed Top and Left values then everything works fine.. But I cant as my application will run into different environment with different resolution.

Please help me out on this.

Shahejad Shaikh SharePoint Developer, Gateway TechnoLabs.

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