function block_height(){
	divs = document.getElementsByTagName('div');
	alter_divs = [];
	max_height = 0;
	
	i = 0;
	
	while(i < divs.length) {
		if(/\bcontent_element_block\b/.test(divs[i].className)){
			d = divs[i];
			alter_divs[alter_divs.length] = d;
			if(d.offsetHeight){
				div_height = d.offsetHeight;
			}
			else if(d.style.pixelHeight){
				div_height = d.style.pixelHeight;
			}

			max_height = Math.max(max_height,div_height);
		}
		i++;
	}
	
	i = 0;
	
	while(i < alter_divs.length) {
		alter_divs[i].style.height = max_height + 'px';
		
		i++;
	}
}

window.onload=function(){
	if(document.getElementsByTagName){
		block_height();
	}
}