var isIE5=navigator.userAgent.toUpperCase().indexOf("MSIE 5")!=-1;


var targetElementID="text", targetElementStyleOffset=250;

function adjustHeight() {
 if (document.getElementById) {
    var targetElement=document.getElementById(targetElementID),
        documentHeight, totalOffset;
    if (targetElement) {
      documentHeight=document.documentElement.offsetHeight;
        if (isIE5)
          totalOffset=targetElement.offsetTop;
          else 
		  document.getElementById('text').style.minHeight = documentHeight-285 +'px';
		  document.getElementById('text').style.maxHeight = documentHeight-285 +'px';
    }
	  } 

}

window.onresize=adjustHeight;
window.onload=adjustHeight;