var ie=document.all
var ns=document.layers
var ns6=document.getElementById&&!document.all

function enlarge(which,e){
//Render image code for IE 4+ and NS6
if (ie||ns6){
crossobj=document.getElementById? document.getElementById("showimage") : document.all.showimage
if (crossobj.style.visibility=="hidden"){
crossobj.style.left=ns6? pageXOffset+e.clientX : document.body.scrollLeft=5
crossobj.style.top=ns6? pageYOffset+e.clientY : document.body.scrollTop=5
crossobj.innerHTML='<div align=right ID=drag><font face=verdana,arial color=white size=2><b onClick=closepreview()>close</b></font></td></div><img src="'+which+'">'
crossobj.style.visibility="visible"

}

else

crossobj.style.visibility="hidden"

return false

}

//Render image code for NS 4

else if (document.layers){

if (document.showimage.visibility=="hide"){

document.showimage.document.write('<a href="#" onMouseover="drag_dropns(showimage)"><img src="'+which+'" border=0></a>')

document.showimage.document.close()

document.showimage.left=5

document.showimage.top=5

document.showimage.visibility="show"

}

else

document.showimage.visibility="hide"

return false

}

//if NOT IE 4+ or NS 4, simply display image in full browser window

else

return true

}



function closepreview(){

crossobj.style.visibility="hidden"

}



<!--

var message="";

//

function clickIE() {if (document.all) {(message);return false;}}

function clickNS(e) {if 

(document.layers||(document.getElementById&&!document.all)) {

if (e.which==2||e.which==3) {(message);return false;}}}

if (document.layers) 

{document.captureEvents(Event.MOUSEDOWN);document.onmousedown=clickNS;}

else{document.onmouseup=clickNS;document.oncontextmenu=clickIE;}

// --> 




//By Dynamicdrive.com



//drag drop function for NS 4////

/////////////////////////////////



var nsx,nsy,nstemp



function drag_dropns(name){

temp=eval(name)

temp.captureEvents(Event.MOUSEDOWN | Event.MOUSEUP)

temp.onmousedown=gons

temp.onmousemove=dragns

temp.onmouseup=stopns

}



function gons(e){

temp.captureEvents(Event.MOUSEMOVE)

nsx=e.x

nsy=e.y

}

function dragns(e){

temp.moveBy(e.x-nsx,e.y-nsy)

return false

}



function stopns(){

temp.releaseEvents(Event.MOUSEMOVE)

}



//drag drop function for IE 4+ and NS6////

/////////////////////////////////



function drag_drop(e){

if (ie&&dragapproved){

crossobj.style.left=tempx+event.clientX-offsetx

crossobj.style.top=tempy+event.clientY-offsety

}

else if (ns6&&dragapproved){

crossobj.style.left=tempx+e.clientX-offsetx

crossobj.style.top=tempy+e.clientY-offsety

}

return false

}



function initializedrag(e){

if (ie&&event.srcElement.id=="drag"||ns6&&e.target.id=="drag"){

offsetx=ie? event.clientX : e.clientX

offsety=ie? event.clientY : e.clientY



tempx=parseInt(crossobj.style.left)

tempy=parseInt(crossobj.style.top)



dragapproved=true

document.onmousemove=drag_drop

}

}



document.onmousedown=initializedrag

document.onmouseup=new Function("dragapproved=false")