matchHeight=function(aDivs, delta){

        if(!delta) {
            delta = 0;
        }

	var divHeight,tempHeight,tempDiv;
	divHeight=0;
	for(var i=0;i<aDivs.length;i++){
		document.getElementById(aDivs[i]).style.height='auto';
		if(document.getElementById(aDivs[i]).offsetHeight!=0){
			tempHeight=document.getElementById(aDivs[i]).offsetHeight;
		} else if(document.getElementById(aDivs[i]).style.pixelHeight!=0){
			tempHeight=document.getElementById(aDivs[i]).style.pixelHeight;
		} 
		if( tempHeight > divHeight ){
			divHeight=tempHeight;
		}
	}
	for(var i=0;i<aDivs.length;i++){
		document.getElementById(aDivs[i]).style.height=(divHeight + delta)+'px';
	}

}