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Auto select form text

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Last Modified: 2013-11-19
I have links on a page that hide and show layers which each contain a form with a text input box that is readonly. Now the value in the input box is a URL [usually quite long] which the user can select and copy but they have to scroll along the input box to select it as the input box is a fixed width. Is there any way I can auto select the link in the text box when the div is revealed.

I have included my javascript [that shows and hides] the layers which just uses an onclick function. I am wondering if the additional functionality will need to be added to this function somehow.

Thanks.
function getposOffset(overlay, offsettype){
var totaloffset=(offsettype=="left")? overlay.offsetLeft : overlay.offsetTop;
var parentEl=overlay.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}
 
function overlay(curobj, subobjstr, opt_position){
if (document.getElementById){
var subobj=document.getElementById(subobjstr)
subobj.style.display=(subobj.style.display!="block")? "block" : "none"
var xpos=getposOffset(curobj, "left")+((typeof opt_position!="undefined" && opt_position.indexOf("right")!=-1)? -(subobj.offsetWidth-curobj.offsetWidth) : 0) 
var ypos=getposOffset(curobj, "top")+((typeof opt_position!="undefined" && opt_position.indexOf("bottom")!=-1)? curobj.offsetHeight : 0)
subobj.style.left=xpos+"px"
subobj.style.top=ypos+4+"px"
return false
}
else
return true
}
 
function overlayclose(subobj){
document.getElementById(subobj).style.display="none"
}

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