matchHeight=function(){

         var divs,contDivs,countDivs,maxHeight,maxHeights,divHeight,d,gtHeight,layerHeight,e;

         // get all <div> elements in the document

         divs=document.getElementsByTagName('div');

         contDivs=[];
         countDivs=[];

         // initialize maximum height value

         maxHeight=0;
		 maxHeights=680;
         gtHeight=0;


         // iterate over all <div> elements in the document

         for(var j=0;j<divs.length;j++){

              // make collection with <div> elements with class attribute 'envase'

              if(/\benvase\b/.test(divs[j].className)){

                    e=divs[j];

                    countDivs[countDivs.length]=e;

                    // determine height for <div> element

                    if(e.offsetHeight){

                         layerHeight=e.offsetHeight;

                    }

                    else if(e.style.pixelHeight){

                         layerHeight=e.style.pixelHeight;

                    }

                    // calculate maximum height

                    gtHeight=Math.max(gtHeight,layerHeight);

              }

         }

         // assign maximum height value to all of envase <div> elements

         for(var j=0;j<countDivs.length;j++){

              countDivs[j].style.height=gtHeight+'px';

         }

         // iterate over all <div> elements in the document

         for(var i=0;i<divs.length;i++){

              // make collection with <div> elements with class attribute 'embalaje'

              if(/\bembalaje\b/.test(divs[i].className)){

                    d=divs[i];

                    contDivs[contDivs.length]=d;

                    // determine height for <div> element

                    if(d.offsetHeight){

                         divHeight=d.offsetHeight;

                    }

                    else if(d.style.pixelHeight){

                         divHeight=d.style.pixelHeight;

                    }

                    // calculate maximum height

                    maxHeight=Math.max(maxHeight,divHeight);

              }

         }

         // assign maximum height value to all of embalaje <div> elements
		 
         maxHeights=Math.max(maxHeights,maxHeight);

         for(var i=0;i<contDivs.length;i++){

              contDivs[i].style.height=maxHeights+'px';

         }
    }

    // execute function when page loads

    window.onload=function(){

         if(document.getElementsByTagName){

              matchHeight();

         }

    }