images issue in IE7   

Actually i am using MM_preloadImage() of java script. this function is 
working in IE6but not in IE7.at the time of pageloading all images are 
loading but after images loading i clicked redraw button then images is not 
loading. why pls give me answer
i am ataching this function.

function MM_preloadImages() { //v3.0
alert("cursor inside MM_preloadImage");  
var d=document;
 if(d.images)
{
   if(!d.MM_p) 
  d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; 
for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0)
{ 
d.MM_p[j]=new Image;
 d.MM_p[j++].src=a[i];}
}
}

date: Wed, 14 May 2008 22:53:00 -0700   author:   mithilesh