function _UprAlt()
{ 
    if (document.getElementsByTagName)
    {
        var i, imgObj, arrObj=new Array();
        arrObj=document.getElementsByTagName('img');
        for(i=0;i<arrObj.length;i++)
		    {
		        arrObj[i].alt='';
		        arrObj[i].title='';
		    }
    }
}